475564778163 has 12 divisors (see below), whose sum is σ = 687444573088. Its totient is φ = 316804260240.

The previous prime is 475564778153. The next prime is 475564778191. The reversal of 475564778163 is 361877465574.

475564778163 is a `hidden beast` number, since 4 + 7 + 5 + 564 + 7 + 7 + 8 + 1 + 63 = 666.

It is not a de Polignac number, because 475564778163 - 2⁹ = 475564777651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 475564778163.

It is not an unprimeable number, because it can be changed into a prime (475564778153) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19897828 + ... + 19921713.

Almost surely, 2^475564778163 is an apocalyptic number.

475564778163 is a deficient number, since it is larger than the sum of its proper divisors (211879794925).

475564778163 is a wasteful number, since it uses less digits than its factorization.

475564778163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39820874 (or 39820871 counting only the distinct ones).

The product of its digits is 118540800, while the sum is 63.

The spelling of 475564778163 in words is "four hundred seventy-five billion, five hundred sixty-four million, seven hundred seventy-eight thousand, one hundred sixty-three".