72551655354552 has 128 divisors (see below), whose sum is σ = 206798337515520. Its totient is φ = 20996137008000.

The previous prime is 72551655354499. The next prime is 72551655354553. The reversal of 72551655354552 is 25545355615527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72551655354553) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5636524 + ... + 13299387.

It is an arithmetic number, because the mean of its divisors is an integer number (1615612011840).

Almost surely, 2^{72551655354552} is an apocalyptic number.

It is an amenable number.

72551655354552 is an abundant number, since it is smaller than the sum of its proper divisors (134246682160968).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72551655354552 is a wasteful number, since it uses less digits than its factorization.

72551655354552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18936585 (or 18936581 counting only the distinct ones).

The product of its digits is 157500000, while the sum is 60.

The spelling of 72551655354552 in words is "seventy-two trillion, five hundred fifty-one billion, six hundred fifty-five million, three hundred fifty-four thousand, five hundred fifty-two".