72150571011515 has 16 divisors (see below), whose sum is σ = 92455459188480. Its totient is φ = 53932351186560.

The previous prime is 72150571011503. The next prime is 72150571011517. The reversal of 72150571011515 is 51511017505127.

It is not a de Polignac number, because 72150571011515 - 2⁴ = 72150571011499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72150571011517) 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, 8025643004 + ... + 8025651993.

It is an arithmetic number, because the mean of its divisors is an integer number (5778466199280).

Almost surely, 2^{72150571011515} is an apocalyptic number.

72150571011515 is a deficient number, since it is larger than the sum of its proper divisors (20304888176965).

72150571011515 is a wasteful number, since it uses less digits than its factorization.

72150571011515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16051295062.

The product of its (nonzero) digits is 61250, while the sum is 41.

The spelling of 72150571011515 in words is "seventy-two trillion, one hundred fifty billion, five hundred seventy-one million, eleven thousand, five hundred fifteen".