72150000815 has 16 divisors (see below), whose sum is σ = 92372749920. Its totient is φ = 53910005760.

The previous prime is 72150000787. The next prime is 72150000829. The reversal of 72150000815 is 51800005127.

It is not a de Polignac number, because 72150000815 - 2¹⁸ = 72149738671 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3228650 + ... + 3250919.

It is an arithmetic number, because the mean of its divisors is an integer number (5773296870).

Almost surely, 2^72150000815 is an apocalyptic number.

72150000815 is a deficient number, since it is larger than the sum of its proper divisors (20222749105).

72150000815 is a wasteful number, since it uses less digits than its factorization.

72150000815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6479722.

The product of its (nonzero) digits is 2800, while the sum is 29.

The spelling of 72150000815 in words is "seventy-two billion, one hundred fifty million, eight hundred fifteen", and thus it is an aban number.