72232487636 has 12 divisors (see below), whose sum is σ = 128138454612. Its totient is φ = 35621500608.

The previous prime is 72232487581. The next prime is 72232487641. The reversal of 72232487636 is 63678423227.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14869363600 + 57363124036 = 121940^2 + 239506^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123685475 + ... + 123686058.

It is an arithmetic number, because the mean of its divisors is an integer number (10678204551).

Almost surely, 2^72232487636 is an apocalyptic number.

It is an amenable number.

72232487636 is a deficient number, since it is larger than the sum of its proper divisors (55905966976).

72232487636 is a wasteful number, since it uses less digits than its factorization.

72232487636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247371610 (or 247371608 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 50.

The spelling of 72232487636 in words is "seventy-two billion, two hundred thirty-two million, four hundred eighty-seven thousand, six hundred thirty-six".