72397912582 has 4 divisors (see below), whose sum is σ = 108596868876. Its totient is φ = 36198956290.

The previous prime is 72397912579. The next prime is 72397912589. The reversal of 72397912582 is 28521979327.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72397912589) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18099478144 + ... + 18099478147.

It is an arithmetic number, because the mean of its divisors is an integer number (27149217219).

Almost surely, 2^72397912582 is an apocalyptic number.

72397912582 is a deficient number, since it is larger than the sum of its proper divisors (36198956294).

72397912582 is a wasteful number, since it uses less digits than its factorization.

72397912582 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36198956293.

The product of its digits is 3810240, while the sum is 55.

The spelling of 72397912582 in words is "seventy-two billion, three hundred ninety-seven million, nine hundred twelve thousand, five hundred eighty-two".