72884915988 has 24 divisors (see below), whose sum is σ = 170069168640. Its totient is φ = 24294348480.

The previous prime is 72884915959. The next prime is 72884916007. The reversal of 72884915988 is 88951948827.

It is a super-2 number, since 2×72884915988² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 884448 + ... + 963336.

It is an arithmetic number, because the mean of its divisors is an integer number (7086215360).

Almost surely, 2^72884915988 is an apocalyptic number.

It is an amenable number.

72884915988 is an abundant number, since it is smaller than the sum of its proper divisors (97184252652).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72884915988 is a wasteful number, since it uses less digits than its factorization.

72884915988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155887 (or 155885 counting only the distinct ones).

The product of its digits is 92897280, while the sum is 69.

The spelling of 72884915988 in words is "seventy-two billion, eight hundred eighty-four million, nine hundred fifteen thousand, nine hundred eighty-eight".