646620033116 has 12 divisors (see below), whose sum is σ = 1131659743032. Its totient is φ = 323288677968.

The previous prime is 646620033019. The next prime is 646620033121. The reversal of 646620033116 is 611330026646.

It is a self number, because there is not a number n which added to its sum of digits gives 646620033116.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 5266370 + ... + 5387753.

It is an arithmetic number, because the mean of its divisors is an integer number (94304978586).

Almost surely, 2^646620033116 is an apocalyptic number.

It is an amenable number.

646620033116 is a deficient number, since it is larger than the sum of its proper divisors (485039709916).

646620033116 is a wasteful number, since it uses less digits than its factorization.

646620033116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10669300 (or 10669298 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 38.

The spelling of 646620033116 in words is "six hundred forty-six billion, six hundred twenty million, thirty-three thousand, one hundred sixteen".