23421527851 has 2 divisors, whose sum is σ = 23421527852. Its totient is φ = 23421527850.

The previous prime is 23421527837. The next prime is 23421527887. The reversal of 23421527851 is 15872512432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23421527851 - 2²⁵ = 23387973419 is a prime.

It is not a weakly prime, because it can be changed into another prime (23421527251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11710763925 + 11710763926.

It is an arithmetic number, because the mean of its divisors is an integer number (11710763926).

Almost surely, 2^23421527851 is an apocalyptic number.

23421527851 is a deficient number, since it is larger than the sum of its proper divisors (1).

23421527851 is an equidigital number, since it uses as much as digits as its factorization.

23421527851 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 134400, while the sum is 40.

The spelling of 23421527851 in words is "twenty-three billion, four hundred twenty-one million, five hundred twenty-seven thousand, eight hundred fifty-one".