43900552164 has 192 divisors, whose sum is σ = 124617113600. Its totient is φ = 12009876480.

The previous prime is 43900552109. The next prime is 43900552169. The reversal of 43900552164 is 46125500934.

It is not an unprimeable number, because it can be changed into a prime (43900552169) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 12375039 + ... + 12378585.

Almost surely, 2^43900552164 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 43900552164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62308556800).

43900552164 is an abundant number, since it is smaller than the sum of its proper divisors (80716561436).

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

43900552164 is a wasteful number, since it uses less digits than its factorization.

43900552164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3703 (or 3687 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 39.

The spelling of 43900552164 in words is "forty-three billion, nine hundred million, five hundred fifty-two thousand, one hundred sixty-four".