328444439537 has 2 divisors, whose sum is σ = 328444439538. Its totient is φ = 328444439536.

The previous prime is 328444439459. The next prime is 328444439579. The reversal of 328444439537 is 735934444823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 272652109921 + 55792329616 = 522161^2 + 236204^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328444439537 is a prime.

It is not a weakly prime, because it can be changed into another prime (327444439537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164222219768 + 164222219769.

It is an arithmetic number, because the mean of its divisors is an integer number (164222219769).

Almost surely, 2^328444439537 is an apocalyptic number.

It is an amenable number.

328444439537 is a deficient number, since it is larger than the sum of its proper divisors (1).

328444439537 is an equidigital number, since it uses as much as digits as its factorization.

328444439537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34836480, while the sum is 56.

The spelling of 328444439537 in words is "three hundred twenty-eight billion, four hundred forty-four million, four hundred thirty-nine thousand, five hundred thirty-seven".