850561079764 has 24 divisors (see below), whose sum is σ = 1719315980928. Its totient is φ = 363876397440.

The previous prime is 850561079759. The next prime is 850561079821. The reversal of 850561079764 is 467970165058.

It is a junction number, because it is equal to n+sod(n) for n = 850561079699 and 850561079708.

It is a congruent number.

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, 568556124 + ... + 568557619.

It is an arithmetic number, because the mean of its divisors is an integer number (71638165872).

Almost surely, 2^850561079764 is an apocalyptic number.

It is an amenable number.

850561079764 is an abundant number, since it is smaller than the sum of its proper divisors (868754901164).

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

850561079764 is a wasteful number, since it uses less digits than its factorization.

850561079764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1137113775 (or 1137113773 counting only the distinct ones).

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 850561079764 in words is "eight hundred fifty billion, five hundred sixty-one million, seventy-nine thousand, seven hundred sixty-four".