72538562668552 has 32 divisors (see below), whose sum is σ = 138267215896320. Its totient is φ = 35669088734400.

The previous prime is 72538562668519. The next prime is 72538562668603. The reversal of 72538562668552 is 25586626583527.

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, 111151699 + ... + 111802402.

It is an arithmetic number, because the mean of its divisors is an integer number (4320850496760).

Almost surely, 2^{72538562668552} is an apocalyptic number.

It is an amenable number.

72538562668552 is a deficient number, since it is larger than the sum of its proper divisors (65728653227768).

72538562668552 is a wasteful number, since it uses less digits than its factorization.

72538562668552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222954781 (or 222954777 counting only the distinct ones).

The product of its digits is 1451520000, while the sum is 70.

The spelling of 72538562668552 in words is "seventy-two trillion, five hundred thirty-eight billion, five hundred sixty-two million, six hundred sixty-eight thousand, five hundred fifty-two".