6640006406422 has 16 divisors (see below), whose sum is σ = 10673946846432. Its totient is φ = 3089826717120.

The previous prime is 6640006406417. The next prime is 6640006406461. The reversal of 6640006406422 is 2246046000466.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1950646479 + ... + 1950649882.

It is an arithmetic number, because the mean of its divisors is an integer number (667121677902).

Almost surely, 2^{6640006406422} is an apocalyptic number.

6640006406422 is a deficient number, since it is larger than the sum of its proper divisors (4033940440010).

6640006406422 is a wasteful number, since it uses less digits than its factorization.

6640006406422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901296423.

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 6640006406422 in words is "six trillion, six hundred forty billion, six million, four hundred six thousand, four hundred twenty-two".