72945223016 has 16 divisors (see below), whose sum is σ = 143970835200. Its totient is φ = 34553000304.

The previous prime is 72945222901. The next prime is 72945223033. The reversal of 72945223016 is 61032254927.

It is a super-2 number, since 2×72945223016² (a number of 23 digits) contains 22 as substring.

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, 239951240 + ... + 239951543.

It is an arithmetic number, because the mean of its divisors is an integer number (8998177200).

Almost surely, 2^72945223016 is an apocalyptic number.

72945223016 is a gapful number since it is divisible by the number (76) formed by its first and last digit.

It is an amenable number.

72945223016 is a deficient number, since it is larger than the sum of its proper divisors (71025612184).

72945223016 is a wasteful number, since it uses less digits than its factorization.

72945223016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 479902808 (or 479902804 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 72945223016 in words is "seventy-two billion, nine hundred forty-five million, two hundred twenty-three thousand, sixteen".