646116325036 has 96 divisors (see below), whose sum is σ = 1452742115328. Its totient is φ = 244391938560.

The previous prime is 646116325009. The next prime is 646116325073. The reversal of 646116325036 is 630523611646.

It is a junction number, because it is equal to n+sod(n) for n = 646116324983 and 646116325001.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22028821 + ... + 22058131.

It is an arithmetic number, because the mean of its divisors is an integer number (15132730368).

Almost surely, 2^646116325036 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 646116325036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (726371057664).

646116325036 is an abundant number, since it is smaller than the sum of its proper divisors (806625790292).

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

646116325036 is a wasteful number, since it uses less digits than its factorization.

646116325036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31991 (or 31989 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 43.

The spelling of 646116325036 in words is "six hundred forty-six billion, one hundred sixteen million, three hundred twenty-five thousand, thirty-six".