869609657000 has 64 divisors (see below), whose sum is σ = 2325584701440. Its totient is φ = 298151880000.

The previous prime is 869609656987. The next prime is 869609657003. The reversal of 869609657000 is 756906968.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (869609657003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62107976 + ... + 62121975.

It is an arithmetic number, because the mean of its divisors is an integer number (36337260960).

Almost surely, 2^869609657000 is an apocalyptic number.

It is an amenable number.

869609657000 is an abundant number, since it is smaller than the sum of its proper divisors (1455975044440).

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

869609657000 is a wasteful number, since it uses less digits than its factorization.

869609657000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124229979 (or 124229965 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 869609657000 in words is "eight hundred sixty-nine billion, six hundred nine million, six hundred fifty-seven thousand".