72157942873 has 8 divisors (see below), whose sum is σ = 76114310400. Its totient is φ = 68217433488.

The previous prime is 72157942861. The next prime is 72157942891. The reversal of 72157942873 is 37824975127.

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 72157942873 - 2¹⁷ = 72157811801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72157943873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3955186 + ... + 3973387.

It is an arithmetic number, because the mean of its divisors is an integer number (9514288800).

Almost surely, 2^72157942873 is an apocalyptic number.

It is an amenable number.

72157942873 is a deficient number, since it is larger than the sum of its proper divisors (3956367527).

72157942873 is a wasteful number, since it uses less digits than its factorization.

72157942873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7929071.

The product of its digits is 5927040, while the sum is 55.

The spelling of 72157942873 in words is "seventy-two billion, one hundred fifty-seven million, nine hundred forty-two thousand, eight hundred seventy-three".