136446728878944 has 120 divisors (see below), whose sum is σ = 437766588578088. Its totient is φ = 41347493591040.

The previous prime is 136446728878907. The next prime is 136446728878949. The reversal of 136446728878944 is 449878827644631.

136446728878944 is a `hidden beast` number, since 1 + 3 + 6 + 4 + 467 + 2 + 88 + 78 + 9 + 4 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136446728878949) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2392766257 + ... + 2392823280.

Almost surely, 2^{136446728878944} is an apocalyptic number.

It is an amenable number.

136446728878944 is an abundant number, since it is smaller than the sum of its proper divisors (301319859699144).

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

136446728878944 is a wasteful number, since it uses less digits than its factorization.

136446728878944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785589570 (or 4785589553 counting only the distinct ones).

The product of its digits is 12485394432, while the sum is 81.

The spelling of 136446728878944 in words is "one hundred thirty-six trillion, four hundred forty-six billion, seven hundred twenty-eight million, eight hundred seventy-eight thousand, nine hundred forty-four".