72540737502332 has 72 divisors (see below), whose sum is σ = 143314642970352. Its totient is φ = 32080243345920.

The previous prime is 72540737502223. The next prime is 72540737502341. The reversal of 72540737502332 is 23320573704527.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 387023543 + ... + 387210929.

It is an arithmetic number, because the mean of its divisors is an integer number (1990481152366).

Almost surely, 2^{72540737502332} is an apocalyptic number.

It is an amenable number.

72540737502332 is a deficient number, since it is larger than the sum of its proper divisors (70773905468020).

72540737502332 is a wasteful number, since it uses less digits than its factorization.

72540737502332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209067 (or 209054 counting only the distinct ones).

The product of its (nonzero) digits is 7408800, while the sum is 50.

The spelling of 72540737502332 in words is "seventy-two trillion, five hundred forty billion, seven hundred thirty-seven million, five hundred two thousand, three hundred thirty-two".