136664420616512 has 28 divisors (see below), whose sum is σ = 271594040928180. Its totient is φ = 68231276445696.

The previous prime is 136664420616469. The next prime is 136664420616551. The reversal of 136664420616512 is 215616024466631.

It can be written as a sum of positive squares in 2 ways, for example, as 121055094270016 + 15609326346496 = 11002504^2 + 3950864^2 .

It is a super-2 number, since 2×136664420616512² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1577047937 + ... + 1577134592.

Almost surely, 2^{136664420616512} is an apocalyptic number.

It is an amenable number.

136664420616512 is a deficient number, since it is larger than the sum of its proper divisors (134929620311668).

136664420616512 is an equidigital number, since it uses as much as digits as its factorization.

136664420616512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154183218 (or 3154183208 counting only the distinct ones).

The product of its (nonzero) digits is 7464960, while the sum is 53.

The spelling of 136664420616512 in words is "one hundred thirty-six trillion, six hundred sixty-four billion, four hundred twenty million, six hundred sixteen thousand, five hundred twelve".