646326770075376 has 160 divisors (see below), whose sum is σ = 1844944292674560. Its totient is φ = 193715616310272.

The previous prime is 646326770075351. The next prime is 646326770075417. The reversal of 646326770075376 is 673570077623646.

It is a self number, because there is not a number n which added to its sum of digits gives 646326770075376.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22969971 + ... + 42664658.

It is an arithmetic number, because the mean of its divisors is an integer number (11530901829216).

Almost surely, 2^{646326770075376} is an apocalyptic number.

It is an amenable number.

646326770075376 is an abundant number, since it is smaller than the sum of its proper divisors (1198617522599184).

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

646326770075376 is a wasteful number, since it uses less digits than its factorization.

646326770075376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65635063 (or 65635057 counting only the distinct ones).

The product of its (nonzero) digits is 1120210560, while the sum is 69.

The spelling of 646326770075376 in words is "six hundred forty-six trillion, three hundred twenty-six billion, seven hundred seventy million, seventy-five thousand, three hundred seventy-six".