12987855296 has 56 divisors (see below), whose sum is σ = 29387993040. Its totient is φ = 5641777152.

The previous prime is 12987855281. The next prime is 12987855299. The reversal of 12987855296 is 69255878921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12987855299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444986 + ... + 473273.

It is an arithmetic number, because the mean of its divisors is an integer number (524785590).

Almost surely, 2^12987855296 is an apocalyptic number.

12987855296 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12987855296 is an abundant number, since it is smaller than the sum of its proper divisors (16400137744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12987855296 is a wasteful number, since it uses less digits than its factorization.

12987855296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 918301 (or 918291 counting only the distinct ones).

The product of its digits is 21772800, while the sum is 62.

The spelling of 12987855296 in words is "twelve billion, nine hundred eighty-seven million, eight hundred fifty-five thousand, two hundred ninety-six".