72667771324 has 12 divisors (see below), whose sum is σ = 127948776424. Its totient is φ = 36110978064.

The previous prime is 72667771307. The next prime is 72667771349. The reversal of 72667771324 is 42317776627.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55726167 + ... + 55727470.

Almost surely, 2^72667771324 is an apocalyptic number.

It is an amenable number.

72667771324 is a deficient number, since it is larger than the sum of its proper divisors (55281005100).

72667771324 is a wasteful number, since it uses less digits than its factorization.

72667771324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111453804 (or 111453802 counting only the distinct ones).

The product of its digits is 4148928, while the sum is 52.

The spelling of 72667771324 in words is "seventy-two billion, six hundred sixty-seven million, seven hundred seventy-one thousand, three hundred twenty-four".