6638106327771 has 16 divisors (see below), whose sum is σ = 9156394517760. Its totient is φ = 4272624037920.

The previous prime is 6638106327767. The next prime is 6638106327851. The reversal of 6638106327771 is 1777236018366.

It is not a de Polignac number, because 6638106327771 - 2² = 6638106327767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6638106327701) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 484756 + ... + 3675758.

It is an arithmetic number, because the mean of its divisors is an integer number (572274657360).

Almost surely, 2^{6638106327771} is an apocalyptic number.

6638106327771 is a deficient number, since it is larger than the sum of its proper divisors (2518288189989).

6638106327771 is a wasteful number, since it uses less digits than its factorization.

6638106327771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3214946.

The product of its (nonzero) digits is 10668672, while the sum is 57.

The spelling of 6638106327771 in words is "six trillion, six hundred thirty-eight billion, one hundred six million, three hundred twenty-seven thousand, seven hundred seventy-one".