20774707199 has 2 divisors, whose sum is σ = 20774707200. Its totient is φ = 20774707198.

The previous prime is 20774707189. The next prime is 20774707207. The reversal of 20774707199 is 99170747702.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20774707199 is a prime.

It is a super-3 number, since 3×20774707199³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20774707199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20774707189) 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, 10387353599 + 10387353600.

It is an arithmetic number, because the mean of its divisors is an integer number (10387353600).

Almost surely, 2^20774707199 is an apocalyptic number.

20774707199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20774707199 is an equidigital number, since it uses as much as digits as its factorization.

20774707199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1555848, while the sum is 53.

The spelling of 20774707199 in words is "twenty billion, seven hundred seventy-four million, seven hundred seven thousand, one hundred ninety-nine".