12612515751 has 56 divisors (see below), whose sum is σ = 20664520320. Its totient is φ = 7630880400.

The previous prime is 12612515749. The next prime is 12612515759. The reversal of 12612515751 is 15751521621.

12612515751 is a `hidden beast` number, since 1 + 2 + 61 + 25 + 1 + 575 + 1 = 666.

It is not a de Polignac number, because 12612515751 - 2¹ = 12612515749 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12612515759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 6887406 + ... + 6889236.

Almost surely, 2^12612515751 is an apocalyptic number.

12612515751 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12612515751 is a deficient number, since it is larger than the sum of its proper divisors (8052004569).

12612515751 is an equidigital number, since it uses as much as digits as its factorization.

12612515751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2719 (or 2704 counting only the distinct ones).

The product of its digits is 21000, while the sum is 36.

The spelling of 12612515751 in words is "twelve billion, six hundred twelve million, five hundred fifteen thousand, seven hundred fifty-one".