12537118440 has 576 divisors, whose sum is σ = 53644368960. Its totient is φ = 2604026880.

The previous prime is 12537118409. The next prime is 12537118501. The reversal of 12537118440 is 4481173521.

12537118440 is a `hidden beast` number, since 1 + 2 + 537 + 1 + 1 + 84 + 40 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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 = 12537118395 and 12537118404.

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 143 ways as a sum of consecutive naturals, for example, 5237884 + ... + 5240276.

It is an arithmetic number, because the mean of its divisors is an integer number (93132585).

Almost surely, 2^12537118440 is an apocalyptic number.

12537118440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12537118440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26822184480).

12537118440 is an abundant number, since it is smaller than the sum of its proper divisors (41107250520).

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

12537118440 is a wasteful number, since it uses less digits than its factorization.

12537118440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2444 (or 2421 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 12537118440 in words is "twelve billion, five hundred thirty-seven million, one hundred eighteen thousand, four hundred forty".