22166871847 has 2 divisors, whose sum is σ = 22166871848. Its totient is φ = 22166871846.

The previous prime is 22166871823. The next prime is 22166871913. The reversal of 22166871847 is 74817866122.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22166871847 - 2¹¹ = 22166869799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22166871794 and 22166871803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22166878847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11083435923 + 11083435924.

It is an arithmetic number, because the mean of its divisors is an integer number (11083435924).

Almost surely, 2^22166871847 is an apocalyptic number.

22166871847 is a deficient number, since it is larger than the sum of its proper divisors (1).

22166871847 is an equidigital number, since it uses as much as digits as its factorization.

22166871847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1806336, while the sum is 52.

The spelling of 22166871847 in words is "twenty-two billion, one hundred sixty-six million, eight hundred seventy-one thousand, eight hundred forty-seven".