12137642440 has 64 divisors (see below), whose sum is σ = 34048460160. Its totient is φ = 3783160320.

The previous prime is 12137642437. The next prime is 12137642441. The reversal of 12137642440 is 4424673121.

It is a junction number, because it is equal to n+sod(n) for n = 12137642396 and 12137642405.

It is not an unprimeable number, because it can be changed into a prime (12137642441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1967317 + ... + 1973476.

It is an arithmetic number, because the mean of its divisors is an integer number (532007190).

Almost surely, 2^12137642440 is an apocalyptic number.

12137642440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12137642440 is an abundant number, since it is smaller than the sum of its proper divisors (21910817720).

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

12137642440 is a wasteful number, since it uses less digits than its factorization.

12137642440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3940822 (or 3940818 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 34.

The spelling of 12137642440 in words is "twelve billion, one hundred thirty-seven million, six hundred forty-two thousand, four hundred forty".