72232487637 has 32 divisors (see below), whose sum is σ = 103143140352. Its totient is φ = 44804358144.

The previous prime is 72232487581. The next prime is 72232487641. The reversal of 72232487637 is 73678423227.

It is a happy number.

It is not a de Polignac number, because 72232487637 - 2⁶ = 72232487573 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 72232487637.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72232483637) 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, 4627548 + ... + 4643130.

It is an arithmetic number, because the mean of its divisors is an integer number (3223223136).

Almost surely, 2^72232487637 is an apocalyptic number.

It is an amenable number.

72232487637 is a deficient number, since it is larger than the sum of its proper divisors (30910652715).

72232487637 is a wasteful number, since it uses less digits than its factorization.

72232487637 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16637.

The product of its digits is 4741632, while the sum is 51.

The spelling of 72232487637 in words is "seventy-two billion, two hundred thirty-two million, four hundred eighty-seven thousand, six hundred thirty-seven".