475564778164 has 18 divisors (see below), whose sum is σ = 968114013090. Its totient is φ = 203813476272.

The previous prime is 475564778153. The next prime is 475564778191. The reversal of 475564778164 is 461877465574.

It can be written as a sum of positive squares in only one way, i.e., 282279690000 + 193285088164 = 531300^2 + 439642^2 .

It is a junction number, because it is equal to n+sod(n) for n = 475564778096 and 475564778105.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1213175259 + ... + 1213175650.

Almost surely, 2^475564778164 is an apocalyptic number.

It is an amenable number.

475564778164 is an abundant number, since it is smaller than the sum of its proper divisors (492549234926).

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

475564778164 is a wasteful number, since it uses less digits than its factorization.

475564778164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2426350927 (or 2426350918 counting only the distinct ones).

The product of its digits is 158054400, while the sum is 64.

The spelling of 475564778164 in words is "four hundred seventy-five billion, five hundred sixty-four million, seven hundred seventy-eight thousand, one hundred sixty-four".