12537324540 has 72 divisors (see below), whose sum is σ = 40955267808. Its totient is φ = 3086110080.

The previous prime is 12537324539. The next prime is 12537324563. The reversal of 12537324540 is 4542373521.

12537324540 is a `hidden beast` number, since 1 + 2 + 5 + 373 + 245 + 40 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12537324495 and 12537324504.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2676576 + ... + 2681255.

It is an arithmetic number, because the mean of its divisors is an integer number (568823164).

Almost surely, 2^12537324540 is an apocalyptic number.

12537324540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12537324540 is an abundant number, since it is smaller than the sum of its proper divisors (28417943268).

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

12537324540 is a wasteful number, since it uses less digits than its factorization.

12537324540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5357859 (or 5357854 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 36.

The spelling of 12537324540 in words is "twelve billion, five hundred thirty-seven million, three hundred twenty-four thousand, five hundred forty".