646260406116 has 48 divisors (see below), whose sum is σ = 1629124823424. Its totient is φ = 198214039296.

The previous prime is 646260406093. The next prime is 646260406189. The reversal of 646260406116 is 611604062646.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6568896 + ... + 6666551.

It is an arithmetic number, because the mean of its divisors is an integer number (33940100488).

Almost surely, 2^646260406116 is an apocalyptic number.

It is an amenable number.

646260406116 is an abundant number, since it is smaller than the sum of its proper divisors (982864417308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

646260406116 is a wasteful number, since it uses less digits than its factorization.

646260406116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13235780 (or 13235778 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 646260406116 in words is "six hundred forty-six billion, two hundred sixty million, four hundred six thousand, one hundred sixteen".