136331326531566 has 64 divisors (see below), whose sum is σ = 311726580513600. Its totient is φ = 44698795496640.

The previous prime is 136331326531553. The next prime is 136331326531597. The reversal of 136331326531566 is 665135623133631.

136331326531566 is a `hidden beast` number, since 1 + 3 + 6 + 3 + 3 + 1 + 3 + 26 + 53 + 1 + 566 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 255213271 + ... + 255746898.

It is an arithmetic number, because the mean of its divisors is an integer number (4870727820525).

Almost surely, 2^{136331326531566} is an apocalyptic number.

136331326531566 is an abundant number, since it is smaller than the sum of its proper divisors (175395253982034).

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

136331326531566 is an frugal number, since it uses more digits than its factorization.

136331326531566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 510960253 (or 510960235 counting only the distinct ones).

The product of its digits is 15746400, while the sum is 54.

The spelling of 136331326531566 in words is "one hundred thirty-six trillion, three hundred thirty-one billion, three hundred twenty-six million, five hundred thirty-one thousand, five hundred sixty-six".