72213431613 has 8 divisors (see below), whose sum is σ = 101352184800. Its totient is φ = 45608483088.

The previous prime is 72213431551. The next prime is 72213431629. The reversal of 72213431613 is 31613431227.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72213431613 - 2²⁸ = 71944996157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72213431663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 633451098 + ... + 633451211.

It is an arithmetic number, because the mean of its divisors is an integer number (12669023100).

Almost surely, 2^72213431613 is an apocalyptic number.

It is an amenable number.

72213431613 is a deficient number, since it is larger than the sum of its proper divisors (29138753187).

72213431613 is a wasteful number, since it uses less digits than its factorization.

72213431613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266902331.

The product of its digits is 18144, while the sum is 33.

The spelling of 72213431613 in words is "seventy-two billion, two hundred thirteen million, four hundred thirty-one thousand, six hundred thirteen".