6639262208699 has 4 divisors (see below), whose sum is σ = 6723303502560. Its totient is φ = 6555220914840.

The previous prime is 6639262208639. The next prime is 6639262208717. The reversal of 6639262208699 is 9968022629366.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6639262208699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6639262208629) 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 3 ways as a sum of consecutive naturals, for example, 42020646812 + ... + 42020646969.

It is an arithmetic number, because the mean of its divisors is an integer number (1680825875640).

Almost surely, 2^{6639262208699} is an apocalyptic number.

6639262208699 is a deficient number, since it is larger than the sum of its proper divisors (84041293861).

6639262208699 is an equidigital number, since it uses as much as digits as its factorization.

6639262208699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84041293860.

The product of its (nonzero) digits is 181398528, while the sum is 68.

The spelling of 6639262208699 in words is "six trillion, six hundred thirty-nine billion, two hundred sixty-two million, two hundred eight thousand, six hundred ninety-nine".