6638327872126 has 8 divisors (see below), whose sum is σ = 10390426234704. Its totient is φ = 3174852460560.

The previous prime is 6638327872049. The next prime is 6638327872147. The reversal of 6638327872126 is 6212787238366.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72155737695 + ... + 72155737786.

It is an arithmetic number, because the mean of its divisors is an integer number (1298803279338).

Almost surely, 2^{6638327872126} is an apocalyptic number.

6638327872126 is a deficient number, since it is larger than the sum of its proper divisors (3752098362578).

6638327872126 is a wasteful number, since it uses less digits than its factorization.

6638327872126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144311475506.

The product of its digits is 48771072, while the sum is 61.

The spelling of 6638327872126 in words is "six trillion, six hundred thirty-eight billion, three hundred twenty-seven million, eight hundred seventy-two thousand, one hundred twenty-six".