20065871311 has 2 divisors, whose sum is σ = 20065871312. Its totient is φ = 20065871310.

The previous prime is 20065871183. The next prime is 20065871323. The reversal of 20065871311 is 11317856002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20065871311 - 2⁷ = 20065871183 is a prime.

It is a super-2 number, since 2×20065871311² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20065871011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10032935655 + 10032935656.

It is an arithmetic number, because the mean of its divisors is an integer number (10032935656).

Almost surely, 2^20065871311 is an apocalyptic number.

20065871311 is a deficient number, since it is larger than the sum of its proper divisors (1).

20065871311 is an equidigital number, since it uses as much as digits as its factorization.

20065871311 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The spelling of 20065871311 in words is "twenty billion, sixty-five million, eight hundred seventy-one thousand, three hundred eleven".