80972508556 has 6 divisors (see below), whose sum is σ = 141701889980. Its totient is φ = 40486254276.

The previous prime is 80972508523. The next prime is 80972508569. The reversal of 80972508556 is 65580527908.

It is a junction number, because it is equal to n+sod(n) for n = 80972508497 and 80972508506.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121563566 + ... + 10121563573.

Almost surely, 2^80972508556 is an apocalyptic number.

It is an amenable number.

80972508556 is a deficient number, since it is larger than the sum of its proper divisors (60729381424).

80972508556 is a wasteful number, since it uses less digits than its factorization.

80972508556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20243127143 (or 20243127141 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 55.

The spelling of 80972508556 in words is "eighty billion, nine hundred seventy-two million, five hundred eight thousand, five hundred fifty-six".