72328020626 has 4 divisors (see below), whose sum is σ = 108492030942. Its totient is φ = 36164010312.

The previous prime is 72328020607. The next prime is 72328020641. The reversal of 72328020626 is 62602082327.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 63063765625 + 9264255001 = 251125^2 + 96251^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72328020626.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18082005155 + ... + 18082005158.

Almost surely, 2^72328020626 is an apocalyptic number.

72328020626 is a deficient number, since it is larger than the sum of its proper divisors (36164010316).

72328020626 is a wasteful number, since it uses less digits than its factorization.

72328020626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36164010315.

The product of its (nonzero) digits is 96768, while the sum is 38.

The spelling of 72328020626 in words is "seventy-two billion, three hundred twenty-eight million, twenty thousand, six hundred twenty-six".