136398445918425 has 96 divisors (see below), whose sum is σ = 254324446003200. Its totient is φ = 71655679529280.

The previous prime is 136398445918409. The next prime is 136398445918453. The reversal of 136398445918425 is 524819544893631.

136398445918425 is a `hidden beast` number, since 1 + 3 + 6 + 3 + 9 + 8 + 4 + 4 + 591 + 8 + 4 + 25 = 666.

It is not a de Polignac number, because 136398445918425 - 2⁴ = 136398445918409 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 816092016 + ... + 816259134.

It is an arithmetic number, because the mean of its divisors is an integer number (2649212979200).

Almost surely, 2^{136398445918425} is an apocalyptic number.

136398445918425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

136398445918425 is a deficient number, since it is larger than the sum of its proper divisors (117926000084775).

136398445918425 is a wasteful number, since it uses less digits than its factorization.

136398445918425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185252 (or 185241 counting only the distinct ones).

The product of its digits is 895795200, while the sum is 72.

The spelling of 136398445918425 in words is "one hundred thirty-six trillion, three hundred ninety-eight billion, four hundred forty-five million, nine hundred eighteen thousand, four hundred twenty-five".