6386640889006 has 8 divisors (see below), whose sum is σ = 10948527238320. Its totient is φ = 2737131809568.

The previous prime is 6386640888989. The next prime is 6386640889007. The reversal of 6386640889006 is 6009880466836.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6386640889007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228094317451 + ... + 228094317478.

It is an arithmetic number, because the mean of its divisors is an integer number (1368565904790).

Almost surely, 2^{6386640889006} is an apocalyptic number.

6386640889006 is a deficient number, since it is larger than the sum of its proper divisors (4561886349314).

6386640889006 is a wasteful number, since it uses less digits than its factorization.

6386640889006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456188634938.

The product of its (nonzero) digits is 71663616, while the sum is 64.

The spelling of 6386640889006 in words is "six trillion, three hundred eighty-six billion, six hundred forty million, eight hundred eighty-nine thousand, six".