870617525368572 has 72 divisors (see below), whose sum is σ = 2405349368053632. Its totient is φ = 264324106368000.

The previous prime is 870617525368553. The next prime is 870617525368621. The reversal of 870617525368572 is 275863525716078.

It is a happy number.

870617525368572 is a `hidden beast` number, since 8 + 7 + 0 + 6 + 1 + 7 + 5 + 2 + 536 + 85 + 7 + 2 = 666.

It is a super-2 number, since 2×870617525368572² (a number of 31 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (72) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 870617525368572.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22944781929 + ... + 22944819872.

It is an arithmetic number, because the mean of its divisors is an integer number (33407630111856).

Almost surely, 2^{870617525368572} is an apocalyptic number.

It is an amenable number.

870617525368572 is an abundant number, since it is smaller than the sum of its proper divisors (1534731842685060).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

870617525368572 is a wasteful number, since it uses less digits than its factorization.

870617525368572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45889601859 (or 45889601854 counting only the distinct ones).

The product of its (nonzero) digits is 1185408000, while the sum is 72.

The spelling of 870617525368572 in words is "eight hundred seventy trillion, six hundred seventeen billion, five hundred twenty-five million, three hundred sixty-eight thousand, five hundred seventy-two".