12397996587 has 8 divisors (see below), whose sum is σ = 16532231680. Its totient is φ = 8264546280.

The previous prime is 12397996579. The next prime is 12397996609. The reversal of 12397996587 is 78569979321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12397996587 - 2³ = 12397996579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12397996517) 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 7 ways as a sum of consecutive naturals, for example, 158287 + ... + 223272.

It is an arithmetic number, because the mean of its divisors is an integer number (2066528960).

Almost surely, 2^12397996587 is an apocalyptic number.

12397996587 is a deficient number, since it is larger than the sum of its proper divisors (4134235093).

12397996587 is a wasteful number, since it uses less digits than its factorization.

12397996587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392393.

The product of its digits is 51438240, while the sum is 66.

The spelling of 12397996587 in words is "twelve billion, three hundred ninety-seven million, nine hundred ninety-six thousand, five hundred eighty-seven".