6638143861706 has 32 divisors (see below), whose sum is σ = 11387193840000. Its totient is φ = 2843039791872.

The previous prime is 6638143861681. The next prime is 6638143861721. The reversal of 6638143861706 is 6071683418366.

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, 137102030 + ... + 137150438.

It is an arithmetic number, because the mean of its divisors is an integer number (355849807500).

Almost surely, 2^{6638143861706} is an apocalyptic number.

6638143861706 is a deficient number, since it is larger than the sum of its proper divisors (4749049978294).

6638143861706 is a wasteful number, since it uses less digits than its factorization.

6638143861706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54686.

The product of its (nonzero) digits is 20901888, while the sum is 59.

The spelling of 6638143861706 in words is "six trillion, six hundred thirty-eight billion, one hundred forty-three million, eight hundred sixty-one thousand, seven hundred six".