869974504965918 has 48 divisors (see below), whose sum is σ = 2122635742336512. Its totient is φ = 255124488258000.

The previous prime is 869974504965913. The next prime is 869974504965919. The reversal of 869974504965918 is 819569405479968.

It is a happy number.

869974504965918 is a `hidden beast` number, since 8 + 6 + 9 + 9 + 7 + 4 + 5 + 0 + 4 + 9 + 6 + 591 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869974504965913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70867907268 + ... + 70867919543.

It is an arithmetic number, because the mean of its divisors is an integer number (44221577965344).

Almost surely, 2^{869974504965918} is an apocalyptic number.

869974504965918 is an abundant number, since it is smaller than the sum of its proper divisors (1252661237370594).

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

869974504965918 is a wasteful number, since it uses less digits than its factorization.

869974504965918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141735826861 (or 141735826858 counting only the distinct ones).

The product of its (nonzero) digits is 42326323200, while the sum is 90.

The spelling of 869974504965918 in words is "eight hundred sixty-nine trillion, nine hundred seventy-four billion, five hundred four million, nine hundred sixty-five thousand, nine hundred eighteen".