12188557577 has 12 divisors (see below), whose sum is σ = 14180346000. Its totient is φ = 10445994216.

The previous prime is 12188557529. The next prime is 12188557621. The reversal of 12188557577 is 77575588121.

It is a happy number.

12188557577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12188557577 - 2²² = 12184363273 is a prime.

It is a super-2 number, since 2×12188557577² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12188557177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 652238 + ... + 670664.

It is an arithmetic number, because the mean of its divisors is an integer number (1181695500).

Almost surely, 2^12188557577 is an apocalyptic number.

It is an amenable number.

12188557577 is a deficient number, since it is larger than the sum of its proper divisors (1991788423).

12188557577 is a wasteful number, since it uses less digits than its factorization.

12188557577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31940 (or 31933 counting only the distinct ones).

The product of its digits is 5488000, while the sum is 56.

The spelling of 12188557577 in words is "twelve billion, one hundred eighty-eight million, five hundred fifty-seven thousand, five hundred seventy-seven".