12597236544 has 28 divisors (see below), whose sum is σ = 33330188864. Its totient is φ = 4199078784.

The previous prime is 12597236513. The next prime is 12597236563. The reversal of 12597236544 is 44563279521.

12597236544 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 12597236493 and 12597236502.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32805112 + ... + 32805495.

It is an arithmetic number, because the mean of its divisors is an integer number (1190363888).

Almost surely, 2^12597236544 is an apocalyptic number.

It is an amenable number.

12597236544 is an abundant number, since it is smaller than the sum of its proper divisors (20732952320).

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

12597236544 is an equidigital number, since it uses as much as digits as its factorization.

12597236544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65610622 (or 65610612 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 48.

The spelling of 12597236544 in words is "twelve billion, five hundred ninety-seven million, two hundred thirty-six thousand, five hundred forty-four".