Base | Representation |
---|---|
bin | 11101111100001101001110… |
… | …100100011111101111101000 |
3 | 122021020112221211011221210100 |
4 | 131330031032210133233220 |
5 | 114224424103423034440 |
6 | 1144021142103345400 |
7 | 36510422003326164 |
oct | 3574151644375750 |
9 | 567215854157710 |
10 | 131680720518120 |
11 | 38a59530906714 |
12 | 12928732a52260 |
13 | 58625919875c7 |
14 | 24735491bdca4 |
15 | 10354b7523230 |
hex | 77c34e91fbe8 |
131680720518120 has 192 divisors, whose sum is σ = 456396575544000. Its totient is φ = 32811514066944.
The previous prime is 131680720518119. The next prime is 131680720518197. The reversal of 131680720518120 is 21815027086131.
131680720518120 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 8 + 0 + 7 + 2 + 0 + 518 + 120 = 666.
It is a super-2 number, since 2×1316807205181202 (a number of 29 digits) contains 22 as substring.
It is a Harshad number since it is a multiple of its sum of digits (45).
It is an unprimeable number.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 76546650 + ... + 78248009.
It is an arithmetic number, because the mean of its divisors is an integer number (2377065497625).
Almost surely, 2131680720518120 is an apocalyptic number.
131680720518120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.
It is an amenable number.
131680720518120 is an abundant number, since it is smaller than the sum of its proper divisors (324715855025880).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
131680720518120 is a wasteful number, since it uses less digits than its factorization.
131680720518120 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 154794832 (or 154794825 counting only the distinct ones).
The product of its (nonzero) digits is 161280, while the sum is 45.
The spelling of 131680720518120 in words is "one hundred thirty-one trillion, six hundred eighty billion, seven hundred twenty million, five hundred eighteen thousand, one hundred twenty".
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