Base | Representation |
---|---|
bin | 100101101000010001… |
… | …0010101101000000011 |
3 | 21201120122122110202200 |
4 | 1023100202111220003 |
5 | 2310443331324411 |
6 | 101042301244243 |
7 | 5560333202460 |
oct | 1132042255003 |
9 | 251518573680 |
10 | 80808073731 |
11 | 312a8061910 |
12 | 137b2563683 |
13 | 780a683858 |
14 | 3ca8206667 |
15 | 217e3dce56 |
hex | 12d0895a03 |
80808073731 has 48 divisors (see below), whose sum is σ = 145589633280. Its totient is φ = 41959431360.
The previous prime is 80808073721. The next prime is 80808073763. The reversal of 80808073731 is 13737080808.
It is not a de Polignac number, because 80808073731 - 217 = 80807942659 is a prime.
It is a super-2 number, since 2×808080737312 (a number of 23 digits) contains 22 as substring.
It is not an unprimeable number, because it can be changed into a prime (80808073721) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1596001 + ... + 1645853.
It is an arithmetic number, because the mean of its divisors is an integer number (3033117360).
Almost surely, 280808073731 is an apocalyptic number.
80808073731 is a deficient number, since it is larger than the sum of its proper divisors (64781559549).
80808073731 is a wasteful number, since it uses less digits than its factorization.
80808073731 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 52216 (or 52213 counting only the distinct ones).
The product of its (nonzero) digits is 225792, while the sum is 45.
The spelling of 80808073731 in words is "eighty billion, eight hundred eight million, seventy-three thousand, seven hundred thirty-one".
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