72157150015 has 4 divisors (see below), whose sum is σ = 86588580024. Its totient is φ = 57725720008.

The previous prime is 72157149941. The next prime is 72157150019. The reversal of 72157150015 is 51005175127.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72157150015 - 2³¹ = 70009666367 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72157150019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7215714997 + ... + 7215715006.

It is an arithmetic number, because the mean of its divisors is an integer number (21647145006).

Almost surely, 2^72157150015 is an apocalyptic number.

72157150015 is a deficient number, since it is larger than the sum of its proper divisors (14431430009).

72157150015 is a wasteful number, since it uses less digits than its factorization.

72157150015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14431430008.

The product of its (nonzero) digits is 12250, while the sum is 34.

The spelling of 72157150015 in words is "seventy-two billion, one hundred fifty-seven million, one hundred fifty thousand, fifteen".