20862681199 has 2 divisors, whose sum is σ = 20862681200. Its totient is φ = 20862681198.

The previous prime is 20862681193. The next prime is 20862681211. The reversal of 20862681199 is 99118626802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20862681199 - 2²¹ = 20860584047 is a prime.

It is a super-2 number, since 2×20862681199² (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 (20862681193) 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, 10431340599 + 10431340600.

It is an arithmetic number, because the mean of its divisors is an integer number (10431340600).

Almost surely, 2^20862681199 is an apocalyptic number.

20862681199 is a deficient number, since it is larger than the sum of its proper divisors (1).

20862681199 is an equidigital number, since it uses as much as digits as its factorization.

20862681199 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 746496, while the sum is 52.

The spelling of 20862681199 in words is "twenty billion, eight hundred sixty-two million, six hundred eighty-one thousand, one hundred ninety-nine".