21886243627 has 2 divisors, whose sum is σ = 21886243628. Its totient is φ = 21886243626.

The previous prime is 21886243571. The next prime is 21886243637. The reversal of 21886243627 is 72634268812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21886243627 - 2¹⁵ = 21886210859 is a prime.

It is not a weakly prime, because it can be changed into another prime (21886243637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10943121813 + 10943121814.

It is an arithmetic number, because the mean of its divisors is an integer number (10943121814).

Almost surely, 2^21886243627 is an apocalyptic number.

21886243627 is a deficient number, since it is larger than the sum of its proper divisors (1).

21886243627 is an equidigital number, since it uses as much as digits as its factorization.

21886243627 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1548288, while the sum is 49.

The spelling of 21886243627 in words is "twenty-one billion, eight hundred eighty-six million, two hundred forty-three thousand, six hundred twenty-seven".