43850012640 has 192 divisors, whose sum is σ = 157977630720. Its totient is φ = 10015395840.

The previous prime is 43850012611. The next prime is 43850012659. The reversal of 43850012640 is 4621005834.

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 31 ways as a sum of consecutive naturals, for example, 5402185 + ... + 5410295.

It is an arithmetic number, because the mean of its divisors is an integer number (822800160).

Almost surely, 2^43850012640 is an apocalyptic number.

43850012640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43850012640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78988815360).

43850012640 is an abundant number, since it is smaller than the sum of its proper divisors (114127618080).

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

43850012640 is a wasteful number, since it uses less digits than its factorization.

43850012640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9745 (or 9737 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 33.

The spelling of 43850012640 in words is "forty-three billion, eight hundred fifty million, twelve thousand, six hundred forty".