23111204442149 has 2 divisors, whose sum is σ = 23111204442150. Its totient is φ = 23111204442148.

The previous prime is 23111204442127. The next prime is 23111204442163. The reversal of 23111204442149 is 94124440211132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21000387733924 + 2110816708225 = 4582618^2 + 1452865^2 .

It is a cyclic number.

It is not a de Polignac number, because 23111204442149 - 2¹² = 23111204438053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23111204442349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555602221074 + 11555602221075.

It is an arithmetic number, because the mean of its divisors is an integer number (11555602221075).

Almost surely, 2^{23111204442149} is an apocalyptic number.

It is an amenable number.

23111204442149 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111204442149 is an equidigital number, since it uses as much as digits as its factorization.

23111204442149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 38.

The spelling of 23111204442149 in words is "twenty-three trillion, one hundred eleven billion, two hundred four million, four hundred forty-two thousand, one hundred forty-nine".