475817665505 has 48 divisors (see below), whose sum is σ = 718584255360. Its totient is φ = 296071985664.

The previous prime is 475817665489. The next prime is 475817665507. The reversal of 475817665505 is 505566718574.

It is not a de Polignac number, because 475817665505 - 2⁴ = 475817665489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is not an unprimeable number, because it can be changed into a prime (475817665507) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 332732 + ... + 1030701.

It is an arithmetic number, because the mean of its divisors is an integer number (14970505320).

Almost surely, 2^475817665505 is an apocalyptic number.

It is an amenable number.

475817665505 is a deficient number, since it is larger than the sum of its proper divisors (242766589855).

475817665505 is a wasteful number, since it uses less digits than its factorization.

475817665505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1363530 (or 1363517 counting only the distinct ones).

The product of its (nonzero) digits is 35280000, while the sum is 59.

The spelling of 475817665505 in words is "four hundred seventy-five billion, eight hundred seventeen million, six hundred sixty-five thousand, five hundred five".