43943809164 has 24 divisors (see below), whose sum is σ = 102725099568. Its totient is φ = 14620858560.

The previous prime is 43943809079. The next prime is 43943809181. The reversal of 43943809164 is 46190834934.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3377967 + ... + 3390950.

It is an arithmetic number, because the mean of its divisors is an integer number (4280212482).

Almost surely, 2^43943809164 is an apocalyptic number.

It is an amenable number.

43943809164 is an abundant number, since it is smaller than the sum of its proper divisors (58781290404).

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

43943809164 is a wasteful number, since it uses less digits than its factorization.

43943809164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6769465 (or 6769463 counting only the distinct ones).

The product of its (nonzero) digits is 2239488, while the sum is 51.

The spelling of 43943809164 in words is "forty-three billion, nine hundred forty-three million, eight hundred nine thousand, one hundred sixty-four".