136331861536816 has 20 divisors (see below), whose sum is σ = 288155980066824. Its totient is φ = 61969027971200.

The previous prime is 136331861536789. The next prime is 136331861536873. The reversal of 136331861536816 is 618635168133631.

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, 387306424645 + ... + 387306424996.

Almost surely, 2^{136331861536816} is an apocalyptic number.

136331861536816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

136331861536816 is an abundant number, since it is smaller than the sum of its proper divisors (151824118530008).

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

136331861536816 is a wasteful number, since it uses less digits than its factorization.

136331861536816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774612849660 (or 774612849654 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 61.

The spelling of 136331861536816 in words is "one hundred thirty-six trillion, three hundred thirty-one billion, eight hundred sixty-one million, five hundred thirty-six thousand, eight hundred sixteen".