6445846539994 has 16 divisors (see below), whose sum is σ = 9681451257600. Its totient is φ = 3218698503184.

The previous prime is 6445846539973. The next prime is 6445846540031. The reversal of 6445846539994 is 4999356485446.

It is a self number, because there is not a number n which added to its sum of digits gives 6445846539994.

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, 4833627 + ... + 6021265.

It is an arithmetic number, because the mean of its divisors is an integer number (605090703600).

Almost surely, 2^{6445846539994} is an apocalyptic number.

6445846539994 is a deficient number, since it is larger than the sum of its proper divisors (3235604717606).

6445846539994 is a wasteful number, since it uses less digits than its factorization.

6445846539994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1191197.

The product of its digits is 4031078400, while the sum is 76.

The spelling of 6445846539994 in words is "six trillion, four hundred forty-five billion, eight hundred forty-six million, five hundred thirty-nine thousand, nine hundred ninety-four".