20090856760771 has 2 divisors, whose sum is σ = 20090856760772. Its totient is φ = 20090856760770.

The previous prime is 20090856760693. The next prime is 20090856760789. The reversal of 20090856760771 is 17706765809002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20090856760771 - 2¹⁵ = 20090856728003 is a prime.

It is not a weakly prime, because it can be changed into another prime (20090866760771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10045428380385 + 10045428380386.

It is an arithmetic number, because the mean of its divisors is an integer number (10045428380386).

Almost surely, 2^{20090856760771} is an apocalyptic number.

20090856760771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20090856760771 is an equidigital number, since it uses as much as digits as its factorization.

20090856760771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8890560, while the sum is 58.

The spelling of 20090856760771 in words is "twenty trillion, ninety billion, eight hundred fifty-six million, seven hundred sixty thousand, seven hundred seventy-one".