43438322820 has 96 divisors (see below), whose sum is σ = 132936201216. Its totient is φ = 10550476800.

The previous prime is 43438322791. The next prime is 43438322891. The reversal of 43438322820 is 2822383434.

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, 655261 + ... + 718500.

It is an arithmetic number, because the mean of its divisors is an integer number (1384752096).

Almost surely, 2^43438322820 is an apocalyptic number.

It is an amenable number.

43438322820 is an abundant number, since it is smaller than the sum of its proper divisors (89497878396).

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

43438322820 is a wasteful number, since it uses less digits than its factorization.

43438322820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373821 (or 1373819 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 39.

The spelling of 43438322820 in words is "forty-three billion, four hundred thirty-eight million, three hundred twenty-two thousand, eight hundred twenty".