80971000556 has 6 divisors (see below), whose sum is σ = 141699250980. Its totient is φ = 40485500276.

The previous prime is 80971000507. The next prime is 80971000567. The reversal of 80971000556 is 65500017908.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10121375066 + ... + 10121375073.

It is an arithmetic number, because the mean of its divisors is an integer number (23616541830).

Almost surely, 2^80971000556 is an apocalyptic number.

It is an amenable number.

80971000556 is a deficient number, since it is larger than the sum of its proper divisors (60728250424).

80971000556 is a wasteful number, since it uses less digits than its factorization.

80971000556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20242750143 (or 20242750141 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The spelling of 80971000556 in words is "eighty billion, nine hundred seventy-one million, five hundred fifty-six", and thus it is an aban number.