136640636044240 has 80 divisors (see below), whose sum is σ = 327953991315456. Its totient is φ = 52890493824000.

The previous prime is 136640636044183. The next prime is 136640636044267. The reversal of 136640636044240 is 42440636046631.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48383140 + ... + 51129340.

Almost surely, 2^{136640636044240} is an apocalyptic number.

136640636044240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136640636044240 is an abundant number, since it is smaller than the sum of its proper divisors (191313355271216).

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

136640636044240 is a wasteful number, since it uses less digits than its factorization.

136640636044240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2766308 (or 2766302 counting only the distinct ones).

The product of its (nonzero) digits is 5971968, while the sum is 49.

The spelling of 136640636044240 in words is "one hundred thirty-six trillion, six hundred forty billion, six hundred thirty-six million, forty-four thousand, two hundred forty".