| Base | Representation |
|---|---|
| bin | 1001000011101110110… |
| … | …0111010001000011101 |
| 3 | 112212200110022222222200 |
| 4 | 2100323230322020131 |
| 5 | 10022202313411340 |
| 6 | 155254022202113 |
| 7 | 14146264002216 |
| oct | 2207354721035 |
| 9 | 485613288880 |
| 10 | 155620450845 |
| 11 | 5aaa8762052 |
| 12 | 261b0b83339 |
| 13 | 118a0b17312 |
| 14 | 776400040d |
| 15 | 40ac243330 |
| hex | 243bb3a21d |
155620450845 has 24 divisors (see below), whose sum is σ = 270446432256. Its totient is φ = 82780860768.
The previous prime is 155620450841. The next prime is 155620450889. The reversal of 155620450845 is 548054026551.
155620450845 is a `hidden beast` number, since 1 + 5 + 562 + 0 + 4 + 5 + 0 + 84 + 5 = 666.
155620450845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is not a de Polignac number, because 155620450845 - 22 = 155620450841 is a prime.
It is a super-2 number, since 2×1556204508452 (a number of 23 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is a self number, because there is not a number n which added to its sum of digits gives 155620450845.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (155620450841) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4497429 + ... + 4531898.
It is an arithmetic number, because the mean of its divisors is an integer number (11268601344).
Almost surely, 2155620450845 is an apocalyptic number.
155620450845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
It is an amenable number.
155620450845 is a deficient number, since it is larger than the sum of its proper divisors (114825981411).
155620450845 is a wasteful number, since it uses less digits than its factorization.
155620450845 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 9029721 (or 9029718 counting only the distinct ones).
The product of its (nonzero) digits is 960000, while the sum is 45.
The spelling of 155620450845 in words is "one hundred fifty-five billion, six hundred twenty million, four hundred fifty thousand, eight hundred forty-five".
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