6645694741004 has 24 divisors (see below), whose sum is σ = 12710429675328. Its totient is φ = 3015247893840.

The previous prime is 6645694741001. The next prime is 6645694741019. The reversal of 6645694741004 is 4001474965466.

It is not an unprimeable number, because it can be changed into a prime (6645694741001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 138036734 + ... + 138084869.

It is an arithmetic number, because the mean of its divisors is an integer number (529601236472).

Almost surely, 2^{6645694741004} is an apocalyptic number.

It is an amenable number.

6645694741004 is a deficient number, since it is larger than the sum of its proper divisors (6064734934324).

6645694741004 is a wasteful number, since it uses less digits than its factorization.

6645694741004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276122165 (or 276122163 counting only the distinct ones).

The product of its (nonzero) digits is 17418240, while the sum is 56.

The spelling of 6645694741004 in words is "six trillion, six hundred forty-five billion, six hundred ninety-four million, seven hundred forty-one thousand, four".