322028145640 has 16 divisors (see below), whose sum is σ = 724563327780. Its totient is φ = 128811258240.

The previous prime is 322028145553. The next prime is 322028145679. The reversal of 322028145640 is 46541820223.

It can be written as a sum of positive squares in 2 ways, for example, as 312724771524 + 9303374116 = 559218^2 + 96454^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 322028145640.

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 3 ways as a sum of consecutive naturals, for example, 4025351781 + ... + 4025351860.

Almost surely, 2^322028145640 is an apocalyptic number.

It is an amenable number.

322028145640 is an abundant number, since it is smaller than the sum of its proper divisors (402535182140).

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

322028145640 is a wasteful number, since it uses less digits than its factorization.

322028145640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8050703652 (or 8050703648 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 37.

Adding to 322028145640 its reverse (46541820223), we get a palindrome (368569965863).

The spelling of 322028145640 in words is "three hundred twenty-two billion, twenty-eight million, one hundred forty-five thousand, six hundred forty".