479646971505 has 24 divisors (see below), whose sum is σ = 895341014568. Its totient is φ = 236133893376.

The previous prime is 479646971501. The next prime is 479646971521. The reversal of 479646971505 is 505179646974.

479646971505 is a `hidden beast` number, since 4 + 7 + 9 + 64 + 69 + 7 + 1 + 505 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1113690384 + 478533281121 = 33372^2 + 691761^2 .

It is not a de Polignac number, because 479646971505 - 2² = 479646971501 is a prime.

It is a super-2 number, since 2×479646971505² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (479646971501) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 409954092 + ... + 409955261.

It is an arithmetic number, because the mean of its divisors is an integer number (37305875607).

Almost surely, 2^479646971505 is an apocalyptic number.

479646971505 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

479646971505 is a deficient number, since it is larger than the sum of its proper divisors (415694043063).

479646971505 is a wasteful number, since it uses less digits than its factorization.

479646971505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 819909377 (or 819909374 counting only the distinct ones).

The product of its (nonzero) digits is 57153600, while the sum is 63.

The spelling of 479646971505 in words is "four hundred seventy-nine billion, six hundred forty-six million, nine hundred seventy-one thousand, five hundred five".