71920045732 has 24 divisors (see below), whose sum is σ = 126543872000. Its totient is φ = 35764747776.

The previous prime is 71920045727. The next prime is 71920045781. The reversal of 71920045732 is 23754002917.

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, 3942769 + ... + 3960967.

Almost surely, 2^71920045732 is an apocalyptic number.

It is an amenable number.

71920045732 is a deficient number, since it is larger than the sum of its proper divisors (54623826268).

71920045732 is a wasteful number, since it uses less digits than its factorization.

71920045732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23515 (or 23513 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 40.

The spelling of 71920045732 in words is "seventy-one billion, nine hundred twenty million, forty-five thousand, seven hundred thirty-two".