869601606820 has 24 divisors (see below), whose sum is σ = 1853419546944. Its totient is φ = 342648990816.

The previous prime is 869601606817. The next prime is 869601606871. The reversal of 869601606820 is 28606106968.

869601606820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324476872 + ... + 324479551.

It is an arithmetic number, because the mean of its divisors is an integer number (77225814456).

Almost surely, 2^869601606820 is an apocalyptic number.

It is an amenable number.

869601606820 is an abundant number, since it is smaller than the sum of its proper divisors (983817940124).

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

869601606820 is a wasteful number, since it uses less digits than its factorization.

869601606820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648956499 (or 648956497 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 52.

The spelling of 869601606820 in words is "eight hundred sixty-nine billion, six hundred one million, six hundred six thousand, eight hundred twenty".