6638767271126 has 4 divisors (see below), whose sum is σ = 9958150906692. Its totient is φ = 3319383635562.

The previous prime is 6638767271029. The next prime is 6638767271159. The reversal of 6638767271126 is 6211727678366.

It is a semiprime because it is the product of two 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 as a sum of consecutive naturals, namely, 1659691817780 + ... + 1659691817783.

It is an arithmetic number, because the mean of its divisors is an integer number (2489537726673).

Almost surely, 2^{6638767271126} is an apocalyptic number.

6638767271126 is a deficient number, since it is larger than the sum of its proper divisors (3319383635566).

6638767271126 is a wasteful number, since it uses less digits than its factorization.

6638767271126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319383635565.

The product of its digits is 42674688, while the sum is 62.

The spelling of 6638767271126 in words is "six trillion, six hundred thirty-eight billion, seven hundred sixty-seven million, two hundred seventy-one thousand, one hundred twenty-six".