72755540056 has 16 divisors (see below), whose sum is σ = 136656394200. Its totient is φ = 36313834944.

The previous prime is 72755540051. The next prime is 72755540057. The reversal of 72755540056 is 65004555727.

It is a junction number, because it is equal to n+sod(n) for n = 72755539988 and 72755540015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72755540051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7987050 + ... + 7996153.

Almost surely, 2^72755540056 is an apocalyptic number.

It is an amenable number.

72755540056 is a deficient number, since it is larger than the sum of its proper divisors (63900854144).

72755540056 is a wasteful number, since it uses less digits than its factorization.

72755540056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15983778 (or 15983774 counting only the distinct ones).

The product of its (nonzero) digits is 1470000, while the sum is 46.

The spelling of 72755540056 in words is "seventy-two billion, seven hundred fifty-five million, five hundred forty thousand, fifty-six".