6639165326892 has 48 divisors (see below), whose sum is σ = 18745878574080. Its totient is φ = 1785321768192.

The previous prime is 6639165326887. The next prime is 6639165326917. The reversal of 6639165326892 is 2986235619366.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2324636292 + ... + 2324639147.

It is an arithmetic number, because the mean of its divisors is an integer number (390539136960).

Almost surely, 2^{6639165326892} is an apocalyptic number.

It is an amenable number.

6639165326892 is an abundant number, since it is smaller than the sum of its proper divisors (12106713247188).

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

6639165326892 is a wasteful number, since it uses less digits than its factorization.

6639165326892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4649275470 (or 4649275468 counting only the distinct ones).

The product of its digits is 151165440, while the sum is 66.

The spelling of 6639165326892 in words is "six trillion, six hundred thirty-nine billion, one hundred sixty-five million, three hundred twenty-six thousand, eight hundred ninety-two".