12769685777 has 4 divisors (see below), whose sum is σ = 12861554160. Its totient is φ = 12677817396.

The previous prime is 12769685713. The next prime is 12769685783. The reversal of 12769685777 is 77758696721.

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 12769685777 - 2⁶ = 12769685713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12769685707) 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, 45933983 + ... + 45934260.

It is an arithmetic number, because the mean of its divisors is an integer number (3215388540).

Almost surely, 2^12769685777 is an apocalyptic number.

It is an amenable number.

12769685777 is a deficient number, since it is larger than the sum of its proper divisors (91868383).

12769685777 is an equidigital number, since it uses as much as digits as its factorization.

12769685777 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91868382.

The product of its digits is 62233920, while the sum is 65.

The spelling of 12769685777 in words is "twelve billion, seven hundred sixty-nine million, six hundred eighty-five thousand, seven hundred seventy-seven".