23921354843 has 2 divisors, whose sum is σ = 23921354844. Its totient is φ = 23921354842.

The previous prime is 23921354837. The next prime is 23921354851. The reversal of 23921354843 is 34845312932.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23921354843 - 2⁴ = 23921354827 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23921354794 and 23921354803.

It is not a weakly prime, because it can be changed into another prime (23921354803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11960677421 + 11960677422.

It is an arithmetic number, because the mean of its divisors is an integer number (11960677422).

Almost surely, 2^23921354843 is an apocalyptic number.

23921354843 is a deficient number, since it is larger than the sum of its proper divisors (1).

23921354843 is an equidigital number, since it uses as much as digits as its factorization.

23921354843 is an evil number, because the sum of its binary digits is even.

The product of its digits is 622080, while the sum is 44.

The spelling of 23921354843 in words is "twenty-three billion, nine hundred twenty-one million, three hundred fifty-four thousand, eight hundred forty-three".