43021226438256 has 640 divisors, whose sum is σ = 127257897830400. Its totient is φ = 12515543040000.

The previous prime is 43021226438237. The next prime is 43021226438263. The reversal of 43021226438256 is 65283462212034.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 35821170456 + ... + 35821171656.

It is an arithmetic number, because the mean of its divisors is an integer number (198840465360).

Almost surely, 2^{43021226438256} 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 43021226438256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63628948915200).

43021226438256 is an abundant number, since it is smaller than the sum of its proper divisors (84236671392144).

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

43021226438256 is a wasteful number, since it uses less digits than its factorization.

43021226438256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1518 (or 1490 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 48.

The spelling of 43021226438256 in words is "forty-three trillion, twenty-one billion, two hundred twenty-six million, four hundred thirty-eight thousand, two hundred fifty-six".