322740285457 has 2 divisors, whose sum is σ = 322740285458. Its totient is φ = 322740285456.

The previous prime is 322740285397. The next prime is 322740285463. The reversal of 322740285457 is 754582047223.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 321317788801 + 1422496656 = 566849^2 + 37716^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322740285457 is a prime.

It is a super-2 number, since 2×322740285457² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 322740285457.

It is not a weakly prime, because it can be changed into another prime (322740285467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 161370142728 + 161370142729.

It is an arithmetic number, because the mean of its divisors is an integer number (161370142729).

Almost surely, 2^322740285457 is an apocalyptic number.

It is an amenable number.

322740285457 is a deficient number, since it is larger than the sum of its proper divisors (1).

322740285457 is an equidigital number, since it uses as much as digits as its factorization.

322740285457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3763200, while the sum is 49.

The spelling of 322740285457 in words is "three hundred twenty-two billion, seven hundred forty million, two hundred eighty-five thousand, four hundred fifty-seven".