Base | Representation |
---|---|
bin | 100101101011001110… |
… | …1111000011101010100 |
3 | 21201211120212100120220 |
4 | 1023112131320131110 |
5 | 2311144314201410 |
6 | 101100213554340 |
7 | 5562651663210 |
oct | 1132635703524 |
9 | 251746770526 |
10 | 80907568980 |
11 | 31349239097 |
12 | 1381b9459b0 |
13 | 782517b694 |
14 | 3cb7505940 |
15 | 2187ee3070 |
hex | 12d6778754 |
80907568980 has 96 divisors (see below), whose sum is σ = 267256012800. Its totient is φ = 17896602240.
The previous prime is 80907568967. The next prime is 80907569003. The reversal of 80907568980 is 8986570908.
It is a happy number.
It is a Harshad number since it is a multiple of its sum of digits (60).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3094030 + ... + 3120069.
It is an arithmetic number, because the mean of its divisors is an integer number (2783916800).
Almost surely, 280907568980 is an apocalyptic number.
It is an amenable number.
80907568980 is an abundant number, since it is smaller than the sum of its proper divisors (186348443820).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
80907568980 is a wasteful number, since it uses less digits than its factorization.
80907568980 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 6214149 (or 6214147 counting only the distinct ones).
The product of its (nonzero) digits is 8709120, while the sum is 60.
The spelling of 80907568980 in words is "eighty billion, nine hundred seven million, five hundred sixty-eight thousand, nine hundred eighty".
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