475564778165 has 16 divisors (see below), whose sum is σ = 571816029312. Its totient is φ = 379693706304.

The previous prime is 475564778153. The next prime is 475564778191. The reversal of 475564778165 is 561877465574.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 475564778165 - 2¹⁰ = 475564777141 is a prime.

It is a super-2 number, since 2×475564778165² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5159312 + ... + 5250678.

It is an arithmetic number, because the mean of its divisors is an integer number (35738501832).

Almost surely, 2^475564778165 is an apocalyptic number.

It is an amenable number.

475564778165 is a deficient number, since it is larger than the sum of its proper divisors (96251251147).

475564778165 is a wasteful number, since it uses less digits than its factorization.

475564778165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93436.

The product of its digits is 197568000, while the sum is 65.

The spelling of 475564778165 in words is "four hundred seventy-five billion, five hundred sixty-four million, seven hundred seventy-eight thousand, one hundred sixty-five".