23154241439981 has 2 divisors, whose sum is σ = 23154241439982. Its totient is φ = 23154241439980.

The previous prime is 23154241439929. The next prime is 23154241440007. The reversal of 23154241439981 is 18993414245132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22438610037481 + 715631402500 = 4736941^2 + 845950^2 .

It is a cyclic number.

It is not a de Polignac number, because 23154241439981 - 2²⁶ = 23154174331117 is a prime.

It is a super-2 number, since 2×23154241439981² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23154241430981) 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, 11577120719990 + 11577120719991.

It is an arithmetic number, because the mean of its divisors is an integer number (11577120719991).

Almost surely, 2^{23154241439981} is an apocalyptic number.

It is an amenable number.

23154241439981 is a deficient number, since it is larger than the sum of its proper divisors (1).

23154241439981 is an equidigital number, since it uses as much as digits as its factorization.

23154241439981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 56.

The spelling of 23154241439981 in words is "twenty-three trillion, one hundred fifty-four billion, two hundred forty-one million, four hundred thirty-nine thousand, nine hundred eighty-one".