136685886744 has 32 divisors (see below), whose sum is σ = 372779691840. Its totient is φ = 41419965600.

The previous prime is 136685886739. The next prime is 136685886751. The reversal of 136685886744 is 447688586631.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258874522 + ... + 258875049.

It is an arithmetic number, because the mean of its divisors is an integer number (11649365370).

Almost surely, 2^136685886744 is an apocalyptic number.

It is an amenable number.

136685886744 is an abundant number, since it is smaller than the sum of its proper divisors (236093805096).

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

136685886744 is a wasteful number, since it uses less digits than its factorization.

136685886744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517749591 (or 517749587 counting only the distinct ones).

The product of its digits is 185794560, while the sum is 66.

The spelling of 136685886744 in words is "one hundred thirty-six billion, six hundred eighty-five million, eight hundred eighty-six thousand, seven hundred forty-four".