72157150857 has 8 divisors (see below), whose sum is σ = 104955855840. Its totient is φ = 43731606560.

The previous prime is 72157150847. The next prime is 72157150883. The reversal of 72157150857 is 75805175127.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72157150857 - 2²³ = 72148762249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (72157150847) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1093290132 + ... + 1093290197.

It is an arithmetic number, because the mean of its divisors is an integer number (13119481980).

Almost surely, 2^72157150857 is an apocalyptic number.

It is an amenable number.

72157150857 is a deficient number, since it is larger than the sum of its proper divisors (32798704983).

72157150857 is a wasteful number, since it uses less digits than its factorization.

72157150857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186580343.

The product of its (nonzero) digits is 686000, while the sum is 48.

The spelling of 72157150857 in words is "seventy-two billion, one hundred fifty-seven million, one hundred fifty thousand, eight hundred fifty-seven".