12500000138748 has 24 divisors (see below), whose sum is σ = 29236277185920. Its totient is φ = 4156722399280.

The previous prime is 12500000138699. The next prime is 12500000138777. The reversal of 12500000138748 is 84783100000521.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1243033968 + ... + 1243044023.

It is an arithmetic number, because the mean of its divisors is an integer number (1218178216080).

Almost surely, 2^{12500000138748} is an apocalyptic number.

It is an amenable number.

12500000138748 is an abundant number, since it is smaller than the sum of its proper divisors (16736277047172).

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

12500000138748 is a wasteful number, since it uses less digits than its factorization.

12500000138748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2486078417 (or 2486078415 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The spelling of 12500000138748 in words is "twelve trillion, five hundred billion, one hundred thirty-eight thousand, seven hundred forty-eight".