71055901992 has 32 divisors (see below), whose sum is σ = 180141727680. Its totient is φ = 23351704320.

The previous prime is 71055901951. The next prime is 71055902009. The reversal of 71055901992 is 29910955017.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20848033 + ... + 20851440.

It is an arithmetic number, because the mean of its divisors is an integer number (5629428990).

Almost surely, 2^71055901992 is an apocalyptic number.

It is an amenable number.

71055901992 is an abundant number, since it is smaller than the sum of its proper divisors (109085825688).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

71055901992 is a wasteful number, since it uses less digits than its factorization.

71055901992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41699553 (or 41699549 counting only the distinct ones).

The product of its (nonzero) digits is 255150, while the sum is 48.

The spelling of 71055901992 in words is "seventy-one billion, fifty-five million, nine hundred one thousand, nine hundred ninety-two".