80761947057 has 12 divisors (see below), whose sum is σ = 127261250064. Its totient is φ = 48946634520.

The previous prime is 80761947037. The next prime is 80761947113. The reversal of 80761947057 is 75074916708.

It is not a de Polignac number, because 80761947057 - 2⁷ = 80761946929 is a prime.

It is a super-2 number, since 2×80761947057² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80761946994 and 80761947012.

It is not an unprimeable number, because it can be changed into a prime (80761947037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 407888523 + ... + 407888720.

It is an arithmetic number, because the mean of its divisors is an integer number (10605104172).

Almost surely, 2^80761947057 is an apocalyptic number.

It is an amenable number.

80761947057 is a deficient number, since it is larger than the sum of its proper divisors (46499303007).

80761947057 is a wasteful number, since it uses less digits than its factorization.

80761947057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 815777260 (or 815777257 counting only the distinct ones).

The product of its (nonzero) digits is 2963520, while the sum is 54.

The spelling of 80761947057 in words is "eighty billion, seven hundred sixty-one million, nine hundred forty-seven thousand, fifty-seven".