22166871913 has 2 divisors, whose sum is σ = 22166871914. Its totient is φ = 22166871912.

The previous prime is 22166871847. The next prime is 22166871967. The reversal of 22166871913 is 31917866122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20910027609 + 1256844304 = 144603^2 + 35452^2 .

It is a cyclic number.

It is not a de Polignac number, because 22166871913 - 2²¹ = 22164774761 is a prime.

It is not a weakly prime, because it can be changed into another prime (22166871983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11083435956 + 11083435957.

It is an arithmetic number, because the mean of its divisors is an integer number (11083435957).

Almost surely, 2^22166871913 is an apocalyptic number.

It is an amenable number.

22166871913 is a deficient number, since it is larger than the sum of its proper divisors (1).

22166871913 is an equidigital number, since it uses as much as digits as its factorization.

22166871913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 46.

The spelling of 22166871913 in words is "twenty-two billion, one hundred sixty-six million, eight hundred seventy-one thousand, nine hundred thirteen".