85516763922 has 18 divisors (see below), whose sum is σ = 185289010023. Its totient is φ = 28505174412.

The previous prime is 85516763881. The next prime is 85516763987. The reversal of 85516763922 is 22936761558.

85516763922 is a `hidden beast` number, since 8 + 5 + 516 + 76 + 39 + 22 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42758381961 + 42758381961 = 206781^2 + 206781^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=206781.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1206223 + ... + 1275149.

Almost surely, 2^85516763922 is an apocalyptic number.

85516763922 is an abundant number, since it is smaller than the sum of its proper divisors (99772246101).

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

85516763922 is an frugal number, since it uses more digits than its factorization.

85516763922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137862 (or 68932 counting only the distinct ones).

The product of its digits is 5443200, while the sum is 54.

The spelling of 85516763922 in words is "eighty-five billion, five hundred sixteen million, seven hundred sixty-three thousand, nine hundred twenty-two".