80726705908 has 12 divisors (see below), whose sum is σ = 141454498500. Its totient is φ = 40311134912.

The previous prime is 80726705863. The next prime is 80726705921. The reversal of 80726705908 is 80950762708.

It can be written as a sum of positive squares in 2 ways, for example, as 19921064164 + 60805641744 = 141142^2 + 246588^2 .

It is a congruent number.

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, 13051033 + ... + 13057216.

It is an arithmetic number, because the mean of its divisors is an integer number (11787874875).

Almost surely, 2^80726705908 is an apocalyptic number.

It is an amenable number.

80726705908 is a deficient number, since it is larger than the sum of its proper divisors (60727792592).

80726705908 is a wasteful number, since it uses less digits than its factorization.

80726705908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26109026 (or 26109024 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 80726705908 in words is "eighty billion, seven hundred twenty-six million, seven hundred five thousand, nine hundred eight".