2020695895681 has 2 divisors, whose sum is σ = 2020695895682. Its totient is φ = 2020695895680.

The previous prime is 2020695895663. The next prime is 2020695895703. The reversal of 2020695895681 is 1865985960202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1583530291456 + 437165604225 = 1258384^2 + 661185^2 .

It is a cyclic number.

It is not a de Polignac number, because 2020695895681 - 2⁵ = 2020695895649 is a prime.

It is a super-2 number, since 2×2020695895681² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2020695893681) 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, 1010347947840 + 1010347947841.

It is an arithmetic number, because the mean of its divisors is an integer number (1010347947841).

Almost surely, 2^{2020695895681} is an apocalyptic number.

It is an amenable number.

2020695895681 is a deficient number, since it is larger than the sum of its proper divisors (1).

2020695895681 is an equidigital number, since it uses as much as digits as its factorization.

2020695895681 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18662400, while the sum is 61.

The spelling of 2020695895681 in words is "two trillion, twenty billion, six hundred ninety-five million, eight hundred ninety-five thousand, six hundred eighty-one".