3891745289344 has 512 divisors, whose sum is σ = 9364749189120. Its totient is φ = 1592414208000.

The previous prime is 3891745289323. The next prime is 3891745289357. The reversal of 3891745289344 is 4439825471983.

It is a self number, because there is not a number n which added to its sum of digits gives 3891745289344.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6307528524 + ... + 6307529140.

It is an arithmetic number, because the mean of its divisors is an integer number (18290525760).

Almost surely, 2^{3891745289344} 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 3891745289344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4682374594560).

3891745289344 is an abundant number, since it is smaller than the sum of its proper divisors (5473003899776).

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

3891745289344 is a wasteful number, since it uses less digits than its factorization.

3891745289344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 860 (or 848 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 67.

The spelling of 3891745289344 in words is "three trillion, eight hundred ninety-one billion, seven hundred forty-five million, two hundred eighty-nine thousand, three hundred forty-four".