6645873226744 has 128 divisors (see below), whose sum is σ = 12891657461760. Its totient is φ = 3210726400000.

The previous prime is 6645873226697. The next prime is 6645873226753. The reversal of 6645873226744 is 4476223785466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4151075544 + ... + 4151077144.

It is an arithmetic number, because the mean of its divisors is an integer number (100716073920).

Almost surely, 2^{6645873226744} is an apocalyptic number.

It is an amenable number.

6645873226744 is a deficient number, since it is larger than the sum of its proper divisors (6245784235016).

6645873226744 is a wasteful number, since it uses less digits than its factorization.

6645873226744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2413 (or 2409 counting only the distinct ones).

The product of its digits is 325140480, while the sum is 64.

The spelling of 6645873226744 in words is "six trillion, six hundred forty-five billion, eight hundred seventy-three million, two hundred twenty-six thousand, seven hundred forty-four".