72719935431 has 32 divisors (see below), whose sum is σ = 113952061440. Its totient is φ = 40667798400.

The previous prime is 72719935423. The next prime is 72719935433. The reversal of 72719935431 is 13453991727.

It is not a de Polignac number, because 72719935431 - 2³ = 72719935423 is a prime.

It is a super-2 number, since 2×72719935431² (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 (72719935433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1218826 + ... + 1277096.

It is an arithmetic number, because the mean of its divisors is an integer number (3561001920).

Almost surely, 2^72719935431 is an apocalyptic number.

72719935431 is a deficient number, since it is larger than the sum of its proper divisors (41232126009).

72719935431 is a wasteful number, since it uses less digits than its factorization.

72719935431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61207.

The product of its digits is 1428840, while the sum is 51.

The spelling of 72719935431 in words is "seventy-two billion, seven hundred nineteen million, nine hundred thirty-five thousand, four hundred thirty-one".