20826260699 has 2 divisors, whose sum is σ = 20826260700. Its totient is φ = 20826260698.

The previous prime is 20826260621. The next prime is 20826260713. The reversal of 20826260699 is 99606262802.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20826260699 - 2³² = 16531293403 is a prime.

It is not a weakly prime, because it can be changed into another prime (20826260899) 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, 10413130349 + 10413130350.

It is an arithmetic number, because the mean of its divisors is an integer number (10413130350).

Almost surely, 2^20826260699 is an apocalyptic number.

20826260699 is a deficient number, since it is larger than the sum of its proper divisors (1).

20826260699 is an equidigital number, since it uses as much as digits as its factorization.

20826260699 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The spelling of 20826260699 in words is "twenty billion, eight hundred twenty-six million, two hundred sixty thousand, six hundred ninety-nine".