851021164448706 has 64 divisors (see below), whose sum is σ = 1779082374297600. Its totient is φ = 270876281381376.

The previous prime is 851021164448647. The next prime is 851021164448713. The reversal of 851021164448706 is 607844461120158.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 200328955 + ... + 204532961.

It is an arithmetic number, because the mean of its divisors is an integer number (27798162098400).

Almost surely, 2^{851021164448706} is an apocalyptic number.

851021164448706 is an abundant number, since it is smaller than the sum of its proper divisors (928061209848894).

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

851021164448706 is a wasteful number, since it uses less digits than its factorization.

851021164448706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4206543.

The product of its (nonzero) digits is 10321920, while the sum is 57.

The spelling of 851021164448706 in words is "eight hundred fifty-one trillion, twenty-one billion, one hundred sixty-four million, four hundred forty-eight thousand, seven hundred six".