12877559681 has 32 divisors (see below), whose sum is σ = 16039403520. Its totient is φ = 10089360000.

The previous prime is 12877559663. The next prime is 12877559683. The reversal of 12877559681 is 18695577821.

It is a cyclic number.

It is not a de Polignac number, because 12877559681 - 2¹⁴ = 12877543297 is a prime.

It is a super-2 number, since 2×12877559681² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 12877559681.

It is not an unprimeable number, because it can be changed into a prime (12877559683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1426181 + ... + 1435181.

It is an arithmetic number, because the mean of its divisors is an integer number (501231360).

Almost surely, 2^12877559681 is an apocalyptic number.

It is an amenable number.

12877559681 is a deficient number, since it is larger than the sum of its proper divisors (3161843839).

12877559681 is a wasteful number, since it uses less digits than its factorization.

12877559681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9405.

The product of its digits is 8467200, while the sum is 59.

The spelling of 12877559681 in words is "twelve billion, eight hundred seventy-seven million, five hundred fifty-nine thousand, six hundred eighty-one".