322780120644 has 12 divisors (see below), whose sum is σ = 753153614864. Its totient is φ = 107593373544.

The previous prime is 322780120639. The next prime is 322780120669. The reversal of 322780120644 is 446021087223.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13449171682 + ... + 13449171705.

Almost surely, 2^322780120644 is an apocalyptic number.

It is an amenable number.

322780120644 is an abundant number, since it is smaller than the sum of its proper divisors (430373494220).

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

322780120644 is a wasteful number, since it uses less digits than its factorization.

322780120644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26898343394 (or 26898343392 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 39.

The spelling of 322780120644 in words is "three hundred twenty-two billion, seven hundred eighty million, one hundred twenty thousand, six hundred forty-four".