43981779032016 has 240 divisors, whose sum is σ = 135490864886784. Its totient is φ = 12251530706688.

The previous prime is 43981779031999. The next prime is 43981779032063. The reversal of 43981779032016 is 61023097718934.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54923881 + ... + 55718903.

Almost surely, 2^{43981779032016} 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 43981779032016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67745432443392).

43981779032016 is an abundant number, since it is smaller than the sum of its proper divisors (91509085854768).

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

43981779032016 is a wasteful number, since it uses less digits than its factorization.

43981779032016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795638 (or 795625 counting only the distinct ones).

The product of its (nonzero) digits is 13716864, while the sum is 60.

The spelling of 43981779032016 in words is "forty-three trillion, nine hundred eighty-one billion, seven hundred seventy-nine million, thirty-two thousand, sixteen".