136837771637646 has 48 divisors (see below), whose sum is σ = 284862361680000. Its totient is φ = 43818437035296.

The previous prime is 136837771637641. The next prime is 136837771637663. The reversal of 136837771637646 is 646736177738631.

136837771637646 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136837771637641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67131696 + ... + 69140003.

It is an arithmetic number, because the mean of its divisors is an integer number (5934632535000).

Almost surely, 2^{136837771637646} is an apocalyptic number.

136837771637646 is an abundant number, since it is smaller than the sum of its proper divisors (148024590042354).

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

136837771637646 is a wasteful number, since it uses less digits than its factorization.

136837771637646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136271961 (or 136271932 counting only the distinct ones).

The product of its digits is 2688505344, while the sum is 75.

The spelling of 136837771637646 in words is "one hundred thirty-six trillion, eight hundred thirty-seven billion, seven hundred seventy-one million, six hundred thirty-seven thousand, six hundred forty-six".