23681533427 has 2 divisors, whose sum is σ = 23681533428. Its totient is φ = 23681533426.

The previous prime is 23681533417. The next prime is 23681533459. The reversal of 23681533427 is 72433518632.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23681533427 - 2¹⁰ = 23681532403 is a prime.

It is a super-3 number, since 3×23681533427³ (a number of 32 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (23681533417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11840766713 + 11840766714.

It is an arithmetic number, because the mean of its divisors is an integer number (11840766714).

Almost surely, 2^23681533427 is an apocalyptic number.

23681533427 is a deficient number, since it is larger than the sum of its proper divisors (1).

23681533427 is an equidigital number, since it uses as much as digits as its factorization.

23681533427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 44.

The spelling of 23681533427 in words is "twenty-three billion, six hundred eighty-one million, five hundred thirty-three thousand, four hundred twenty-seven".