71983602172 has 24 divisors (see below), whose sum is σ = 129279524192. Its totient is φ = 35058052800.

The previous prime is 71983602167. The next prime is 71983602203. The reversal of 71983602172 is 27120638917.

It is a congruent number.

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, 1406979 + ... + 1457242.

Almost surely, 2^71983602172 is an apocalyptic number.

It is an amenable number.

71983602172 is a deficient number, since it is larger than the sum of its proper divisors (57295922020).

71983602172 is a wasteful number, since it uses less digits than its factorization.

71983602172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2864389 (or 2864387 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The spelling of 71983602172 in words is "seventy-one billion, nine hundred eighty-three million, six hundred two thousand, one hundred seventy-two".