12575556777 has 64 divisors (see below), whose sum is σ = 19978076160. Its totient is φ = 6887462400.

The previous prime is 12575556767. The next prime is 12575556811. The reversal of 12575556777 is 77765557521.

It is not a de Polignac number, because 12575556777 - 2²⁴ = 12558779561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12575556757) 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 63 ways as a sum of consecutive naturals, for example, 19929252 + ... + 19929882.

It is an arithmetic number, because the mean of its divisors is an integer number (312157440).

Almost surely, 2^12575556777 is an apocalyptic number.

It is an amenable number.

12575556777 is a deficient number, since it is larger than the sum of its proper divisors (7402519383).

12575556777 is a wasteful number, since it uses less digits than its factorization.

12575556777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054.

The product of its digits is 18007500, while the sum is 57.

The spelling of 12575556777 in words is "twelve billion, five hundred seventy-five million, five hundred fifty-six thousand, seven hundred seventy-seven".