646234513116 has 48 divisors (see below), whose sum is σ = 1524208952448. Its totient is φ = 213082792000.

The previous prime is 646234513103. The next prime is 646234513117. The reversal of 646234513116 is 611315432646.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (646234513117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1077931 + ... + 1566653.

It is an arithmetic number, because the mean of its divisors is an integer number (31754353176).

Almost surely, 2^646234513116 is an apocalyptic number.

It is an amenable number.

646234513116 is an abundant number, since it is smaller than the sum of its proper divisors (877974439332).

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

646234513116 is a wasteful number, since it uses less digits than its factorization.

646234513116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489922 (or 489920 counting only the distinct ones).

The product of its digits is 311040, while the sum is 42.

The spelling of 646234513116 in words is "six hundred forty-six billion, two hundred thirty-four million, five hundred thirteen thousand, one hundred sixteen".