43644426364 has 96 divisors (see below), whose sum is σ = 97682360832. Its totient is φ = 16566528000.

The previous prime is 43644426341. The next prime is 43644426373. The reversal of 43644426364 is 46362444634.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11123307 + ... + 11127229.

It is an arithmetic number, because the mean of its divisors is an integer number (1017524592).

Almost surely, 2^43644426364 is an apocalyptic number.

43644426364 is a gapful number since it is divisible by the number (44) 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 43644426364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48841180416).

43644426364 is an abundant number, since it is smaller than the sum of its proper divisors (54037934468).

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

43644426364 is a wasteful number, since it uses less digits than its factorization.

43644426364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4867 (or 4865 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 46.

The spelling of 43644426364 in words is "forty-three billion, six hundred forty-four million, four hundred twenty-six thousand, three hundred sixty-four".