23984135647 has 2 divisors, whose sum is σ = 23984135648. Its totient is φ = 23984135646.

The previous prime is 23984135621. The next prime is 23984135701. The reversal of 23984135647 is 74653148932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23984135647 - 2⁷ = 23984135519 is a prime.

It is a super-2 number, since 2×23984135647² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23984135594 and 23984135603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23984135047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11992067823 + 11992067824.

It is an arithmetic number, because the mean of its divisors is an integer number (11992067824).

Almost surely, 2^23984135647 is an apocalyptic number.

23984135647 is a deficient number, since it is larger than the sum of its proper divisors (1).

23984135647 is an equidigital number, since it uses as much as digits as its factorization.

23984135647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 52.

The spelling of 23984135647 in words is "twenty-three billion, nine hundred eighty-four million, one hundred thirty-five thousand, six hundred forty-seven".