43973853916 has 24 divisors (see below), whose sum is σ = 84526404480. Its totient is φ = 19924079472.

The previous prime is 43973853907. The next prime is 43973853919. The reversal of 43973853916 is 61935837934.

43973853916 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43973853919) 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, 12576586 + ... + 12580081.

It is an arithmetic number, because the mean of its divisors is an integer number (3521933520).

Almost surely, 2^43973853916 is an apocalyptic number.

43973853916 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is an amenable number.

43973853916 is a deficient number, since it is larger than the sum of its proper divisors (40552550564).

43973853916 is a wasteful number, since it uses less digits than its factorization.

43973853916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25156713 (or 25156711 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 58.

The spelling of 43973853916 in words is "forty-three billion, nine hundred seventy-three million, eight hundred fifty-three thousand, nine hundred sixteen".