12904129138890 has 64 divisors (see below), whose sum is σ = 33791597884800. Its totient is φ = 3127695805440.

The previous prime is 12904129138877. The next prime is 12904129138973. The reversal of 12904129138890 is 9883192140921.

It is a self number, because there is not a number n which added to its sum of digits gives 12904129138890.

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, 1821715 + ... + 5396934.

It is an arithmetic number, because the mean of its divisors is an integer number (527993716950).

Almost surely, 2^{12904129138890} is an apocalyptic number.

12904129138890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12904129138890 is an abundant number, since it is smaller than the sum of its proper divisors (20887468745910).

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

12904129138890 is a wasteful number, since it uses less digits than its factorization.

12904129138890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7224087.

The product of its (nonzero) digits is 2239488, while the sum is 57.

The spelling of 12904129138890 in words is "twelve trillion, nine hundred four billion, one hundred twenty-nine million, one hundred thirty-eight thousand, eight hundred ninety".