137844744544 has 72 divisors (see below), whose sum is σ = 295624773360. Its totient is φ = 63239275008.

The previous prime is 137844744533. The next prime is 137844744559. The reversal of 137844744544 is 445447448731.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 826822 + ... + 979450.

It is an arithmetic number, because the mean of its divisors is an integer number (4105899630).

Almost surely, 2^137844744544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 137844744544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147812386680).

137844744544 is an abundant number, since it is smaller than the sum of its proper divisors (157780028816).

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

137844744544 is a wasteful number, since it uses less digits than its factorization.

137844744544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152832 (or 152811 counting only the distinct ones).

The product of its digits is 24084480, while the sum is 55.

The spelling of 137844744544 in words is "one hundred thirty-seven billion, eight hundred forty-four million, seven hundred forty-four thousand, five hundred forty-four".