12500013890 has 64 divisors (see below), whose sum is σ = 27717548544. Its totient is φ = 3952447488.

The previous prime is 12500013853. The next prime is 12500013913. The reversal of 12500013890 is 9831000521.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1101827 + ... + 1113113.

It is an arithmetic number, because the mean of its divisors is an integer number (433086696).

Almost surely, 2^12500013890 is an apocalyptic number.

12500013890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12500013890 is an abundant number, since it is smaller than the sum of its proper divisors (15217534654).

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

12500013890 is a wasteful number, since it uses less digits than its factorization.

12500013890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12531.

The product of its (nonzero) digits is 2160, while the sum is 29.

The spelling of 12500013890 in words is "twelve billion, five hundred million, thirteen thousand, eight hundred ninety".