731444343444136 has 64 divisors (see below), whose sum is σ = 1657932214060800. Its totient is φ = 295739259729408.

The previous prime is 731444343444127. The next prime is 731444343444193. The reversal of 731444343444136 is 631444343444137.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3889574271 + ... + 3889762318.

It is an arithmetic number, because the mean of its divisors is an integer number (25905190844700).

Almost surely, 2^{731444343444136} is an apocalyptic number.

It is an amenable number.

731444343444136 is an abundant number, since it is smaller than the sum of its proper divisors (926487870616664).

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

731444343444136 is a wasteful number, since it uses less digits than its factorization.

731444343444136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7779336698 (or 7779336694 counting only the distinct ones).

The product of its digits is 55738368, while the sum is 55.

Subtracting from 731444343444136 its reverse (631444343444137), we obtain a palindrome (99999999999999).

The spelling of 731444343444136 in words is "seven hundred thirty-one trillion, four hundred forty-four billion, three hundred forty-three million, four hundred forty-four thousand, one hundred thirty-six".