6639898989366 has 24 divisors (see below), whose sum is σ = 14442426216504. Its totient is φ = 2204687600640.

The previous prime is 6639898989341. The next prime is 6639898989389.

6639898989366 is a `hidden beast` number, since 6 + 6 + 3 + 98 + 9 + 89 + 89 + 366 = 666.

6639898989366 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 717667120 + ... + 717676371.

It is an arithmetic number, because the mean of its divisors is an integer number (601767759021).

Almost surely, 2^{6639898989366} is an apocalyptic number.

6639898989366 is an abundant number, since it is smaller than the sum of its proper divisors (7802527227138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6639898989366 is a wasteful number, since it uses less digits than its factorization.

6639898989366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1435343756 (or 1435343753 counting only the distinct ones).

The product of its digits is 39182082048, while the sum is 90.

The spelling of 6639898989366 in words is "six trillion, six hundred thirty-nine billion, eight hundred ninety-eight million, nine hundred eighty-nine thousand, three hundred sixty-six".