72558265173 has 8 divisors (see below), whose sum is σ = 96752119200. Its totient is φ = 48368293968.

The previous prime is 72558265123. The next prime is 72558265189. The reversal of 72558265173 is 37156285527.

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 72558265173 - 2²⁰ = 72557216597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72558265123) 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, 926818 + ... + 1002051.

It is an arithmetic number, because the mean of its divisors is an integer number (12094014900).

Almost surely, 2^72558265173 is an apocalyptic number.

It is an amenable number.

72558265173 is a deficient number, since it is larger than the sum of its proper divisors (24193854027).

72558265173 is a wasteful number, since it uses less digits than its factorization.

72558265173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1941411.

The product of its digits is 3528000, while the sum is 51.

The spelling of 72558265173 in words is "seventy-two billion, five hundred fifty-eight million, two hundred sixty-five thousand, one hundred seventy-three".