12707645757 has 4 divisors (see below), whose sum is σ = 16943527680. Its totient is φ = 8471763836.

The previous prime is 12707645711. The next prime is 12707645761. The reversal of 12707645757 is 75754670721.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12707645757 - 2⁶ = 12707645693 is a prime.

It is a super-2 number, since 2×12707645757² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12707695757) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2117940957 + ... + 2117940962.

It is an arithmetic number, because the mean of its divisors is an integer number (4235881920).

Almost surely, 2^12707645757 is an apocalyptic number.

It is an amenable number.

12707645757 is a deficient number, since it is larger than the sum of its proper divisors (4235881923).

12707645757 is an equidigital number, since it uses as much as digits as its factorization.

12707645757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235881922.

The product of its (nonzero) digits is 2881200, while the sum is 51.

The spelling of 12707645757 in words is "twelve billion, seven hundred seven million, six hundred forty-five thousand, seven hundred fifty-seven".