23161289269 has 2 divisors, whose sum is σ = 23161289270. Its totient is φ = 23161289268.

The previous prime is 23161289257. The next prime is 23161289297. The reversal of 23161289269 is 96298216132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21617820900 + 1543468369 = 147030^2 + 39287^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23161289269 is a prime.

It is a super-2 number, since 2×23161289269² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23161289369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11580644634 + 11580644635.

It is an arithmetic number, because the mean of its divisors is an integer number (11580644635).

Almost surely, 2^23161289269 is an apocalyptic number.

It is an amenable number.

23161289269 is a deficient number, since it is larger than the sum of its proper divisors (1).

23161289269 is an equidigital number, since it uses as much as digits as its factorization.

23161289269 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 49.

The spelling of 23161289269 in words is "twenty-three billion, one hundred sixty-one million, two hundred eighty-nine thousand, two hundred sixty-nine".