125981334664198 has 16 divisors (see below), whose sum is σ = 212356497227616. Its totient is φ = 55617177844800.

The previous prime is 125981334664183. The next prime is 125981334664261. The reversal of 125981334664198 is 891466433189521.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105335563503 + ... + 105335564698.

It is an arithmetic number, because the mean of its divisors is an integer number (13272281076726).

Almost surely, 2^{125981334664198} is an apocalyptic number.

125981334664198 is a deficient number, since it is larger than the sum of its proper divisors (86375162563418).

125981334664198 is a wasteful number, since it uses less digits than its factorization.

125981334664198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210671128239.

The product of its digits is 268738560, while the sum is 70.

The spelling of 125981334664198 in words is "one hundred twenty-five trillion, nine hundred eighty-one billion, three hundred thirty-four million, six hundred sixty-four thousand, one hundred ninety-eight".