12700647902765 has 8 divisors (see below), whose sum is σ = 15240798179448. Its totient is φ = 10160504524800.

The previous prime is 12700647902749. The next prime is 12700647902797. The reversal of 12700647902765 is 56720974600721.

It can be written as a sum of positive squares in 4 ways, for example, as 2528771024521 + 10171876878244 = 1590211^2 + 3189338^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12700647902765 - 2⁴ = 12700647902749 is a prime.

It is a super-2 number, since 2×12700647902765² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12700647902765.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4136129 + ... + 6519881.

It is an arithmetic number, because the mean of its divisors is an integer number (1905099772431).

Almost surely, 2^{12700647902765} is an apocalyptic number.

It is an amenable number.

12700647902765 is a deficient number, since it is larger than the sum of its proper divisors (2540150276683).

12700647902765 is a wasteful number, since it uses less digits than its factorization.

12700647902765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3449359.

The product of its (nonzero) digits is 8890560, while the sum is 56.

The spelling of 12700647902765 in words is "twelve trillion, seven hundred billion, six hundred forty-seven million, nine hundred two thousand, seven hundred sixty-five".