865480353712057 has 2 divisors, whose sum is σ = 865480353712058. Its totient is φ = 865480353712056.

The previous prime is 865480353712031. The next prime is 865480353712229. The reversal of 865480353712057 is 750217353084568.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591521547718656 + 273958805993401 = 24321216^2 + 16551701^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-865480353712057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 865480353712057.

It is not a weakly prime, because it can be changed into another prime (865480353715057) by changing a digit.

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 as a sum of consecutive naturals, namely, 432740176856028 + 432740176856029.

It is an arithmetic number, because the mean of its divisors is an integer number (432740176856029).

Almost surely, 2^{865480353712057} is an apocalyptic number.

It is an amenable number.

865480353712057 is a deficient number, since it is larger than the sum of its proper divisors (1).

865480353712057 is an equidigital number, since it uses as much as digits as its factorization.

865480353712057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344000, while the sum is 64.

The spelling of 865480353712057 in words is "eight hundred sixty-five trillion, four hundred eighty billion, three hundred fifty-three million, seven hundred twelve thousand, fifty-seven".