21008763119 has 2 divisors, whose sum is σ = 21008763120. Its totient is φ = 21008763118.

The previous prime is 21008763107. The next prime is 21008763173. The reversal of 21008763119 is 91136780012.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21008763119 is a prime.

It is a super-2 number, since 2×21008763119² (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 (21008763179) 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, 10504381559 + 10504381560.

It is an arithmetic number, because the mean of its divisors is an integer number (10504381560).

Almost surely, 2^21008763119 is an apocalyptic number.

21008763119 is a deficient number, since it is larger than the sum of its proper divisors (1).

21008763119 is an equidigital number, since it uses as much as digits as its factorization.

21008763119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 21008763119 in words is "twenty-one billion, eight million, seven hundred sixty-three thousand, one hundred nineteen".