13221845643046 has 16 divisors (see below), whose sum is σ = 19956284491248. Its totient is φ = 6569758303200.

The previous prime is 13221845643043. The next prime is 13221845643053. The reversal of 13221845643046 is 64034654812231.

13221845643046 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 (13221845643043) 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, 1673556 + ... + 5407816.

It is an arithmetic number, because the mean of its divisors is an integer number (1247267780703).

Almost surely, 2^{13221845643046} is an apocalyptic number.

13221845643046 is a deficient number, since it is larger than the sum of its proper divisors (6734438848202).

13221845643046 is a wasteful number, since it uses less digits than its factorization.

13221845643046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3745287.

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 13221845643046 in words is "thirteen trillion, two hundred twenty-one billion, eight hundred forty-five million, six hundred forty-three thousand, forty-six".