12775690557 has 24 divisors (see below), whose sum is σ = 21152645696. Its totient is φ = 7278719616.

The previous prime is 12775690549. The next prime is 12775690591. The reversal of 12775690557 is 75509657721.

12775690557 is a `hidden beast` number, since 1 + 2 + 77 + 569 + 0 + 5 + 5 + 7 = 666.

It is not a de Polignac number, because 12775690557 - 2³ = 12775690549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12775690597) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 279643 + ... + 322104.

Almost surely, 2^12775690557 is an apocalyptic number.

It is an amenable number.

12775690557 is a deficient number, since it is larger than the sum of its proper divisors (8376955139).

12775690557 is a wasteful number, since it uses less digits than its factorization.

12775690557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 602097 (or 602094 counting only the distinct ones).

The product of its (nonzero) digits is 4630500, while the sum is 54.

The spelling of 12775690557 in words is "twelve billion, seven hundred seventy-five million, six hundred ninety thousand, five hundred fifty-seven".