72400740179 has 4 divisors (see below), whose sum is σ = 72401283240. Its totient is φ = 72400197120.

The previous prime is 72400740161. The next prime is 72400740199. The reversal of 72400740179 is 97104700427.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 72400740179 - 2⁸ = 72400739923 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72400740199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 81107 + ... + 389075.

It is an arithmetic number, because the mean of its divisors is an integer number (18100320810).

Almost surely, 2^72400740179 is an apocalyptic number.

72400740179 is a deficient number, since it is larger than the sum of its proper divisors (543061).

72400740179 is a wasteful number, since it uses less digits than its factorization.

72400740179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543060.

The product of its (nonzero) digits is 98784, while the sum is 41.

The spelling of 72400740179 in words is "seventy-two billion, four hundred million, seven hundred forty thousand, one hundred seventy-nine".