71838518872 has 16 divisors (see below), whose sum is σ = 140553624240. Its totient is φ = 34357552416.

The previous prime is 71838518837. The next prime is 71838518881. The reversal of 71838518872 is 27881583817.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195213183 + ... + 195213550.

It is an arithmetic number, because the mean of its divisors is an integer number (8784601515).

Almost surely, 2^71838518872 is an apocalyptic number.

It is an amenable number.

71838518872 is a deficient number, since it is larger than the sum of its proper divisors (68715105368).

71838518872 is a wasteful number, since it uses less digits than its factorization.

71838518872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 390426762 (or 390426758 counting only the distinct ones).

The product of its digits is 6021120, while the sum is 58.

The spelling of 71838518872 in words is "seventy-one billion, eight hundred thirty-eight million, five hundred eighteen thousand, eight hundred seventy-two".