72881932916 has 48 divisors (see below), whose sum is σ = 143408289024. Its totient is φ = 32156906496.

The previous prime is 72881932913. The next prime is 72881932919. The reversal of 72881932916 is 61923918827.

It is an interprime number because it is at equal distance from previous prime (72881932913) and next prime (72881932919).

It is a super-2 number, since 2×72881932916² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72881932913) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2192516 + ... + 2225508.

It is an arithmetic number, because the mean of its divisors is an integer number (2987672688).

Almost surely, 2^72881932916 is an apocalyptic number.

It is an amenable number.

72881932916 is a deficient number, since it is larger than the sum of its proper divisors (70526356108).

72881932916 is a wasteful number, since it uses less digits than its factorization.

72881932916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34880 (or 34878 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 56.

The spelling of 72881932916 in words is "seventy-two billion, eight hundred eighty-one million, nine hundred thirty-two thousand, nine hundred sixteen".