71272872056 has 16 divisors (see below), whose sum is σ = 134885577240. Its totient is φ = 35303384800.

The previous prime is 71272872023. The next prime is 71272872061. The reversal of 71272872056 is 65027827217.

It is a super-2 number, since 2×71272872056² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 71272872056.

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, 41630495 + ... + 41632206.

Almost surely, 2^71272872056 is an apocalyptic number.

It is an amenable number.

71272872056 is a deficient number, since it is larger than the sum of its proper divisors (63612705184).

71272872056 is a wasteful number, since it uses less digits than its factorization.

71272872056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83262814 (or 83262810 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 47.

The spelling of 71272872056 in words is "seventy-one billion, two hundred seventy-two million, eight hundred seventy-two thousand, fifty-six".