6639910199366 has 8 divisors (see below), whose sum is σ = 9959902500384. Its totient is φ = 3319942699240.

The previous prime is 6639910199347. The next prime is 6639910199381.

6639910199366 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 6639910199296 and 6639910199305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5515790 + ... + 6610881.

It is an arithmetic number, because the mean of its divisors is an integer number (1244987812548).

Almost surely, 2^{6639910199366} is an apocalyptic number.

6639910199366 is a deficient number, since it is larger than the sum of its proper divisors (3319992301018).

6639910199366 is a wasteful number, since it uses less digits than its factorization.

6639910199366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12400446.

The product of its (nonzero) digits is 76527504, while the sum is 68.

The spelling of 6639910199366 in words is "six trillion, six hundred thirty-nine billion, nine hundred ten million, one hundred ninety-nine thousand, three hundred sixty-six".