872857858724 has 6 divisors (see below), whose sum is σ = 1527501252774. Its totient is φ = 436428929360.

The previous prime is 872857858723. The next prime is 872857858783. The reversal of 872857858724 is 427858758278.

872857858724 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 867897192100 + 4960666624 = 931610^2 + 70432^2 .

It is not an unprimeable number, because it can be changed into a prime (872857858721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109107232337 + ... + 109107232344.

It is an arithmetic number, because the mean of its divisors is an integer number (254583542129).

Almost surely, 2^872857858724 is an apocalyptic number.

It is an amenable number.

872857858724 is a deficient number, since it is larger than the sum of its proper divisors (654643394050).

872857858724 is a wasteful number, since it uses less digits than its factorization.

872857858724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218214464685 (or 218214464683 counting only the distinct ones).

The product of its digits is 561971200, while the sum is 71.

The spelling of 872857858724 in words is "eight hundred seventy-two billion, eight hundred fifty-seven million, eight hundred fifty-eight thousand, seven hundred twenty-four".