43646440013216 has 48 divisors (see below), whose sum is σ = 86283836271360. Its totient is φ = 21733125242880.

The previous prime is 43646440013191. The next prime is 43646440013221. The reversal of 43646440013216 is 61231004464634.

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, 34001105 + ... + 35261423.

It is an arithmetic number, because the mean of its divisors is an integer number (1797579922320).

Almost surely, 2^{43646440013216} is an apocalyptic number.

It is an amenable number.

43646440013216 is a deficient number, since it is larger than the sum of its proper divisors (42637396258144).

43646440013216 is a wasteful number, since it uses less digits than its factorization.

43646440013216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264797 (or 1264789 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 43646440013216 in words is "forty-three trillion, six hundred forty-six billion, four hundred forty million, thirteen thousand, two hundred sixteen".