12545815924 has 48 divisors (see below), whose sum is σ = 23747075856. Its totient is φ = 5777408000.

The previous prime is 12545815913. The next prime is 12545815937. The reversal of 12545815924 is 42951854521.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 6220476900 + 6325339024 = 78870^2 + 79532^2 .

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1440864 + ... + 1449544.

It is an arithmetic number, because the mean of its divisors is an integer number (494730747).

Almost surely, 2^12545815924 is an apocalyptic number.

It is an amenable number.

12545815924 is a deficient number, since it is larger than the sum of its proper divisors (11201259932).

12545815924 is a wasteful number, since it uses less digits than its factorization.

12545815924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9156 (or 9154 counting only the distinct ones).

The product of its digits is 576000, while the sum is 46.

The spelling of 12545815924 in words is "twelve billion, five hundred forty-five million, eight hundred fifteen thousand, nine hundred twenty-four".