23966136481 has 8 divisors (see below), whose sum is σ = 27427242944. Its totient is φ = 20514373200.

The previous prime is 23966136479. The next prime is 23966136497. The reversal of 23966136481 is 18463166932.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23966136481 - 2¹ = 23966136479 is a prime.

It is a super-2 number, since 2×23966136481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23966136421) 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 in 7 ways as a sum of consecutive naturals, for example, 2330295 + ... + 2340556.

It is an arithmetic number, because the mean of its divisors is an integer number (3428405368).

Almost surely, 2^23966136481 is an apocalyptic number.

It is an amenable number.

23966136481 is a deficient number, since it is larger than the sum of its proper divisors (3461106463).

23966136481 is an equidigital number, since it uses as much as digits as its factorization.

23966136481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671591.

The product of its digits is 1119744, while the sum is 49.

The spelling of 23966136481 in words is "twenty-three billion, nine hundred sixty-six million, one hundred thirty-six thousand, four hundred eighty-one".