73536664672 has 24 divisors (see below), whose sum is σ = 146056513176. Its totient is φ = 36442947072.

The previous prime is 73536664661. The next prime is 73536664679. The reversal of 73536664672 is 27646663537.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73536664679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10164618 + ... + 10171849.

It is an arithmetic number, because the mean of its divisors is an integer number (6085688049).

Almost surely, 2^73536664672 is an apocalyptic number.

It is an amenable number.

73536664672 is a deficient number, since it is larger than the sum of its proper divisors (72519848504).

73536664672 is a wasteful number, since it uses less digits than its factorization.

73536664672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20336590 (or 20336582 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 55.

The spelling of 73536664672 in words is "seventy-three billion, five hundred thirty-six million, six hundred sixty-four thousand, six hundred seventy-two".