12631476617465 has 4 divisors (see below), whose sum is σ = 15157771940964. Its totient is φ = 10105181293968.

The previous prime is 12631476617413. The next prime is 12631476617471. The reversal of 12631476617465 is 56471667413621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1814034553321 + 10817442064144 = 1346861^2 + 3288988^2 .

It is a cyclic number.

It is not a de Polignac number, because 12631476617465 - 2⁸ = 12631476617209 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1263147661742 + ... + 1263147661751.

It is an arithmetic number, because the mean of its divisors is an integer number (3789442985241).

Almost surely, 2^{12631476617465} is an apocalyptic number.

It is an amenable number.

12631476617465 is a deficient number, since it is larger than the sum of its proper divisors (2526295323499).

12631476617465 is an equidigital number, since it uses as much as digits as its factorization.

12631476617465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2526295323498.

The product of its digits is 30481920, while the sum is 59.

The spelling of 12631476617465 in words is "twelve trillion, six hundred thirty-one billion, four hundred seventy-six million, six hundred seventeen thousand, four hundred sixty-five".