43646329916 has 24 divisors (see below), whose sum is σ = 87297272160. Its totient is φ = 18704581632.

The previous prime is 43646329879. The next prime is 43646329919. The reversal of 43646329916 is 61992364634.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43646329919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 798800 + ... + 851688.

It is an arithmetic number, because the mean of its divisors is an integer number (3637386340).

Almost surely, 2^43646329916 is an apocalyptic number.

It is an amenable number.

43646329916 is an abundant number, since it is smaller than the sum of its proper divisors (43650942244).

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

43646329916 is a wasteful number, since it uses less digits than its factorization.

43646329916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82373 (or 82371 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 53.

The spelling of 43646329916 in words is "forty-three billion, six hundred forty-six million, three hundred twenty-nine thousand, nine hundred sixteen".