23361545261 has 2 divisors, whose sum is σ = 23361545262. Its totient is φ = 23361545260.

The previous prime is 23361545239. The next prime is 23361545309. The reversal of 23361545261 is 16254516332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18028164361 + 5333380900 = 134269^2 + 73030^2 .

It is a cyclic number.

It is not a de Polignac number, because 23361545261 - 2¹⁸ = 23361283117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23361545761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11680772630 + 11680772631.

It is an arithmetic number, because the mean of its divisors is an integer number (11680772631).

Almost surely, 2^23361545261 is an apocalyptic number.

It is an amenable number.

23361545261 is a deficient number, since it is larger than the sum of its proper divisors (1).

23361545261 is an equidigital number, since it uses as much as digits as its factorization.

23361545261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 129600, while the sum is 38.

The spelling of 23361545261 in words is "twenty-three billion, three hundred sixty-one million, five hundred forty-five thousand, two hundred sixty-one".