7446861664913 has 32 divisors (see below), whose sum is σ = 8637319526400. Its totient is φ = 6349158648000.

The previous prime is 7446861664903. The next prime is 7446861664937. The reversal of 7446861664913 is 3194661686447.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 7446861664913 - 2²⁰ = 7446860616337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7446861664913.

It is not an unprimeable number, because it can be changed into a prime (7446861664903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 177695720 + ... + 177737622.

It is an arithmetic number, because the mean of its divisors is an integer number (269916235200).

Almost surely, 2^{7446861664913} is an apocalyptic number.

It is an amenable number.

7446861664913 is a deficient number, since it is larger than the sum of its proper divisors (1190457861487).

7446861664913 is a wasteful number, since it uses less digits than its factorization.

7446861664913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50453.

The product of its digits is 125411328, while the sum is 65.

The spelling of 7446861664913 in words is "seven trillion, four hundred forty-six billion, eight hundred sixty-one million, six hundred sixty-four thousand, nine hundred thirteen".