12977357636 has 12 divisors (see below), whose sum is σ = 22809549420. Its totient is φ = 6460343520.

The previous prime is 12977357611. The next prime is 12977357707. The reversal of 12977357636 is 63675377921.

It can be written as a sum of positive squares in 2 ways, for example, as 7049281600 + 5928076036 = 83960^2 + 76994^2 .

It is a super-2 number, since 2×12977357636² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7082795 + ... + 7084626.

It is an arithmetic number, because the mean of its divisors is an integer number (1900795785).

Almost surely, 2^12977357636 is an apocalyptic number.

It is an amenable number.

12977357636 is a deficient number, since it is larger than the sum of its proper divisors (9832191784).

12977357636 is a wasteful number, since it uses less digits than its factorization.

12977357636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14167654 (or 14167652 counting only the distinct ones).

The product of its digits is 10001880, while the sum is 56.

The spelling of 12977357636 in words is "twelve billion, nine hundred seventy-seven million, three hundred fifty-seven thousand, six hundred thirty-six".