136436331172844 has 12 divisors (see below), whose sum is σ = 243843655713504. Its totient is φ = 66766715254704.

The previous prime is 136436331172753. The next prime is 136436331172859. The reversal of 136436331172844 is 448271133634631.

It is a super-2 number, since 2×136436331172844² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 136436331172844.

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, 362862582719 + ... + 362862583094.

It is an arithmetic number, because the mean of its divisors is an integer number (20320304642792).

Almost surely, 2^{136436331172844} is an apocalyptic number.

It is an amenable number.

136436331172844 is a deficient number, since it is larger than the sum of its proper divisors (107407324540660).

136436331172844 is a wasteful number, since it uses less digits than its factorization.

136436331172844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725725165864 (or 725725165862 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 56.

The spelling of 136436331172844 in words is "one hundred thirty-six trillion, four hundred thirty-six billion, three hundred thirty-one million, one hundred seventy-two thousand, eight hundred forty-four".