80957696018 has 8 divisors (see below), whose sum is σ = 121824521148. Its totient is φ = 40349522304.

The previous prime is 80957696009. The next prime is 80957696023. The reversal of 80957696018 is 81069675908.

It can be written as a sum of positive squares in 2 ways, for example, as 60183374329 + 20774321689 = 245323^2 + 144133^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64662071 + ... + 64663322.

Almost surely, 2^80957696018 is an apocalyptic number.

80957696018 is a deficient number, since it is larger than the sum of its proper divisors (40866825130).

80957696018 is a wasteful number, since it uses less digits than its factorization.

80957696018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129325708.

The product of its (nonzero) digits is 6531840, while the sum is 59.

The spelling of 80957696018 in words is "eighty billion, nine hundred fifty-seven million, six hundred ninety-six thousand, eighteen".