12645770577 has 16 divisors (see below), whose sum is σ = 18496615680. Its totient is φ = 7621283600.

The previous prime is 12645770567. The next prime is 12645770617. The reversal of 12645770577 is 77507754621.

It is a cyclic number.

It is not a de Polignac number, because 12645770577 - 2⁴ = 12645770561 is a prime.

It is a super-2 number, since 2×12645770577² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12645770567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1064499 + ... + 1076312.

It is an arithmetic number, because the mean of its divisors is an integer number (1156038480).

Almost surely, 2^12645770577 is an apocalyptic number.

It is an amenable number.

12645770577 is a deficient number, since it is larger than the sum of its proper divisors (5850845103).

12645770577 is a wasteful number, since it uses less digits than its factorization.

12645770577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2141004.

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

The spelling of 12645770577 in words is "twelve billion, six hundred forty-five million, seven hundred seventy thousand, five hundred seventy-seven".