72426632784 has 80 divisors (see below), whose sum is σ = 211149789120. Its totient is φ = 21190650880.

The previous prime is 72426632723. The next prime is 72426632807. The reversal of 72426632784 is 48723662427.

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 15 ways as a sum of consecutive naturals, for example, 2349717 + ... + 2380340.

It is an arithmetic number, because the mean of its divisors is an integer number (2639372364).

Almost surely, 2^72426632784 is an apocalyptic number.

It is an amenable number.

72426632784 is an abundant number, since it is smaller than the sum of its proper divisors (138723156336).

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

72426632784 is a wasteful number, since it uses less digits than its factorization.

72426632784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4730108 (or 4730102 counting only the distinct ones).

The product of its digits is 5419008, while the sum is 51.

The spelling of 72426632784 in words is "seventy-two billion, four hundred twenty-six million, six hundred thirty-two thousand, seven hundred eighty-four".