646114420251016 has 32 divisors (see below), whose sum is σ = 1232060138195040. Its totient is φ = 317593880304768.

The previous prime is 646114420250933. The next prime is 646114420251019. The reversal of 646114420251016 is 610152024411646.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (646114420251019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1801710466 + ... + 1802069041.

It is an arithmetic number, because the mean of its divisors is an integer number (38501879318595).

Almost surely, 2^{646114420251016} is an apocalyptic number.

It is an amenable number.

646114420251016 is a deficient number, since it is larger than the sum of its proper divisors (585945717944024).

646114420251016 is a wasteful number, since it uses less digits than its factorization.

646114420251016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3603779893 (or 3603779889 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 43.

The spelling of 646114420251016 in words is "six hundred forty-six trillion, one hundred fourteen billion, four hundred twenty million, two hundred fifty-one thousand, sixteen".