72423734372 has 48 divisors (see below), whose sum is σ = 139196232000. Its totient is φ = 32698229760.

The previous prime is 72423734371. The next prime is 72423734431. The reversal of 72423734372 is 27343732427.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (72423734371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7501004 + ... + 7510652.

It is an arithmetic number, because the mean of its divisors is an integer number (2899921500).

Almost surely, 2^72423734372 is an apocalyptic number.

It is an amenable number.

72423734372 is a deficient number, since it is larger than the sum of its proper divisors (66772497628).

72423734372 is a wasteful number, since it uses less digits than its factorization.

72423734372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10796 (or 10794 counting only the distinct ones).

The product of its digits is 1185408, while the sum is 44.

The spelling of 72423734372 in words is "seventy-two billion, four hundred twenty-three million, seven hundred thirty-four thousand, three hundred seventy-two".