12977122587 has 48 divisors (see below), whose sum is σ = 20608675584. Its totient is φ = 7214961600.

The previous prime is 12977122579. The next prime is 12977122637. The reversal of 12977122587 is 78522177921.

It is a happy number.

It is not a de Polignac number, because 12977122587 - 2³ = 12977122579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12977122547) 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 47 ways as a sum of consecutive naturals, for example, 760762 + ... + 777632.

It is an arithmetic number, because the mean of its divisors is an integer number (429347408).

Almost surely, 2^12977122587 is an apocalyptic number.

12977122587 is a deficient number, since it is larger than the sum of its proper divisors (7631552997).

12977122587 is a wasteful number, since it uses less digits than its factorization.

12977122587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17072 (or 17061 counting only the distinct ones).

The product of its digits is 987840, while the sum is 51.

The spelling of 12977122587 in words is "twelve billion, nine hundred seventy-seven million, one hundred twenty-two thousand, five hundred eighty-seven".