1063319401681 has 2 divisors, whose sum is σ = 1063319401682. Its totient is φ = 1063319401680.

The previous prime is 1063319401667. The next prime is 1063319401747. The reversal of 1063319401681 is 1861049133601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 833552566081 + 229766835600 = 912991^2 + 479340^2 .

It is a cyclic number.

It is not a de Polignac number, because 1063319401681 - 2³³ = 1054729467089 is a prime.

It is a super-2 number, since 2×1063319401681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1063319401621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 531659700840 + 531659700841.

It is an arithmetic number, because the mean of its divisors is an integer number (531659700841).

Almost surely, 2^{1063319401681} is an apocalyptic number.

It is an amenable number.

1063319401681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1063319401681 is an equidigital number, since it uses as much as digits as its factorization.

1063319401681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 93312, while the sum is 43.

The spelling of 1063319401681 in words is "one trillion, sixty-three billion, three hundred nineteen million, four hundred one thousand, six hundred eighty-one".