12896981428394 has 32 divisors (see below), whose sum is σ = 22485823050240. Its totient is φ = 5433116259312.

The previous prime is 12896981428381. The next prime is 12896981428447. The reversal of 12896981428394 is 49382418969821.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8769677 + ... + 10134159.

It is an arithmetic number, because the mean of its divisors is an integer number (702681970320).

Almost surely, 2^{12896981428394} is an apocalyptic number.

12896981428394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

12896981428394 is a deficient number, since it is larger than the sum of its proper divisors (9588841621846).

12896981428394 is a wasteful number, since it uses less digits than its factorization.

12896981428394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375994.

The product of its digits is 429981696, while the sum is 74.

The spelling of 12896981428394 in words is "twelve trillion, eight hundred ninety-six billion, nine hundred eighty-one million, four hundred twenty-eight thousand, three hundred ninety-four".