12708513765 has 32 divisors (see below), whose sum is σ = 23203541760. Its totient is φ = 6594685632.

The previous prime is 12708513743. The next prime is 12708513781. The reversal of 12708513765 is 56731580721.

It is a happy number.

12708513765 is a `hidden beast` number, since 1 + 2 + 70 + 8 + 513 + 7 + 65 = 666.

It is not a de Polignac number, because 12708513765 - 2⁷ = 12708513637 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 12708513765.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1267129 + ... + 1277118.

It is an arithmetic number, because the mean of its divisors is an integer number (725110680).

Almost surely, 2^12708513765 is an apocalyptic number.

12708513765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12708513765 is a deficient number, since it is larger than the sum of its proper divisors (10495027995).

12708513765 is a wasteful number, since it uses less digits than its factorization.

12708513765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2544298 (or 2544292 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 45.

The spelling of 12708513765 in words is "twelve billion, seven hundred eight million, five hundred thirteen thousand, seven hundred sixty-five".