71572872215 has 16 divisors (see below), whose sum is σ = 92502228000. Its totient is φ = 52849210752.

The previous prime is 71572872083. The next prime is 71572872229. The reversal of 71572872215 is 51227827517.

It is not a de Polignac number, because 71572872215 - 2¹⁸ = 71572610071 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71572872215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 825761 + ... + 908309.

It is an arithmetic number, because the mean of its divisors is an integer number (5781389250).

Almost surely, 2^71572872215 is an apocalyptic number.

71572872215 is a deficient number, since it is larger than the sum of its proper divisors (20929355785).

71572872215 is a wasteful number, since it uses less digits than its factorization.

71572872215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95906.

The product of its digits is 548800, while the sum is 47.

The spelling of 71572872215 in words is "seventy-one billion, five hundred seventy-two million, eight hundred seventy-two thousand, two hundred fifteen".