80656644724 has 6 divisors (see below), whose sum is σ = 141149128274. Its totient is φ = 40328322360.

The previous prime is 80656644707. The next prime is 80656644737. The reversal of 80656644724 is 42744665608.

It can be written as a sum of positive squares in only one way, i.e., 69363756900 + 11292887824 = 263370^2 + 106268^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10082080587 + ... + 10082080594.

Almost surely, 2^80656644724 is an apocalyptic number.

It is an amenable number.

80656644724 is a deficient number, since it is larger than the sum of its proper divisors (60492483550).

80656644724 is a wasteful number, since it uses less digits than its factorization.

80656644724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20164161185 (or 20164161183 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 52.

The spelling of 80656644724 in words is "eighty billion, six hundred fifty-six million, six hundred forty-four thousand, seven hundred twenty-four".