803563081081 has 2 divisors, whose sum is σ = 803563081082. Its totient is φ = 803563081080.

The previous prime is 803563081063. The next prime is 803563081147. The reversal of 803563081081 is 180180365308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 706119215481 + 97443865600 = 840309^2 + 312160^2 .

It is a cyclic number.

It is not a de Polignac number, because 803563081081 - 2¹⁵ = 803563048313 is a prime.

It is a super-2 number, since 2×803563081081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (803563081001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401781540540 + 401781540541.

It is an arithmetic number, because the mean of its divisors is an integer number (401781540541).

Almost surely, 2^803563081081 is an apocalyptic number.

It is an amenable number.

803563081081 is a deficient number, since it is larger than the sum of its proper divisors (1).

803563081081 is an equidigital number, since it uses as much as digits as its factorization.

803563081081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 138240, while the sum is 43.

The spelling of 803563081081 in words is "eight hundred three billion, five hundred sixty-three million, eighty-one thousand, eighty-one".