646180796328 has 16 divisors (see below), whose sum is σ = 1615451990880. Its totient is φ = 215393598768.

The previous prime is 646180796281. The next prime is 646180796423. The reversal of 646180796328 is 823697081646.

646180796328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13462099900 + ... + 13462099947.

It is an arithmetic number, because the mean of its divisors is an integer number (100965749430).

Almost surely, 2^646180796328 is an apocalyptic number.

It is an amenable number.

646180796328 is an abundant number, since it is smaller than the sum of its proper divisors (969271194552).

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

646180796328 is a wasteful number, since it uses less digits than its factorization.

646180796328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26924199856 (or 26924199852 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 60.

The spelling of 646180796328 in words is "six hundred forty-six billion, one hundred eighty million, seven hundred ninety-six thousand, three hundred twenty-eight".