80944670056 has 8 divisors (see below), whose sum is σ = 151771256370. Its totient is φ = 40472335024.

The previous prime is 80944670047. The next prime is 80944670069. The reversal of 80944670056 is 65007644908.

It can be written as a sum of positive squares in only one way, i.e., 51060633156 + 29884036900 = 225966^2 + 172870^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×80944670056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 80944669991 and 80944670009.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5059041871 + ... + 5059041886.

Almost surely, 2^80944670056 is an apocalyptic number.

It is an amenable number.

80944670056 is a deficient number, since it is larger than the sum of its proper divisors (70826586314).

80944670056 is a wasteful number, since it uses less digits than its factorization.

80944670056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10118083763 (or 10118083759 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 49.

The spelling of 80944670056 in words is "eighty billion, nine hundred forty-four million, six hundred seventy thousand, fifty-six".