21677263199 has 2 divisors, whose sum is σ = 21677263200. Its totient is φ = 21677263198.

The previous prime is 21677263187. The next prime is 21677263207. The reversal of 21677263199 is 99136277612.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21677263199 - 2⁴ = 21677263183 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21677263199.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21677262199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10838631599 + 10838631600.

It is an arithmetic number, because the mean of its divisors is an integer number (10838631600).

Almost surely, 2^21677263199 is an apocalyptic number.

21677263199 is a deficient number, since it is larger than the sum of its proper divisors (1).

21677263199 is an equidigital number, since it uses as much as digits as its factorization.

21677263199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1714608, while the sum is 53.

The spelling of 21677263199 in words is "twenty-one billion, six hundred seventy-seven million, two hundred sixty-three thousand, one hundred ninety-nine".