72156223416 has 32 divisors (see below), whose sum is σ = 180419736960. Its totient is φ = 24048184032.

The previous prime is 72156223351. The next prime is 72156223471. The reversal of 72156223416 is 61432265127.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89710 + ... + 390333.

It is an arithmetic number, because the mean of its divisors is an integer number (5638116780).

Almost surely, 2^72156223416 is an apocalyptic number.

It is an amenable number.

72156223416 is an abundant number, since it is smaller than the sum of its proper divisors (108263513544).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72156223416 is a wasteful number, since it uses less digits than its factorization.

72156223416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486315 (or 486311 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The spelling of 72156223416 in words is "seventy-two billion, one hundred fifty-six million, two hundred twenty-three thousand, four hundred sixteen".