20098974769 has 2 divisors, whose sum is σ = 20098974770. Its totient is φ = 20098974768.

The previous prime is 20098974719. The next prime is 20098974773. The reversal of 20098974769 is 96747989002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17447239744 + 2651735025 = 132088^2 + 51495^2 .

It is a cyclic number.

It is not a de Polignac number, because 20098974769 - 2⁹ = 20098974257 is a prime.

It is a super-2 number, since 2×20098974769² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20098974719) 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, 10049487384 + 10049487385.

It is an arithmetic number, because the mean of its divisors is an integer number (10049487385).

Almost surely, 2^20098974769 is an apocalyptic number.

It is an amenable number.

20098974769 is a deficient number, since it is larger than the sum of its proper divisors (1).

20098974769 is an equidigital number, since it uses as much as digits as its factorization.

20098974769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13716864, while the sum is 61.

The spelling of 20098974769 in words is "twenty billion, ninety-eight million, nine hundred seventy-four thousand, seven hundred sixty-nine".