23254179821 has 2 divisors, whose sum is σ = 23254179822. Its totient is φ = 23254179820.

The previous prime is 23254179811. The next prime is 23254179863. The reversal of 23254179821 is 12897145232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12924506596 + 10329673225 = 113686^2 + 101635^2 .

It is a cyclic number.

It is not a de Polignac number, because 23254179821 - 2³⁴ = 6074310637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23254179811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11627089910 + 11627089911.

It is an arithmetic number, because the mean of its divisors is an integer number (11627089911).

Almost surely, 2^23254179821 is an apocalyptic number.

It is an amenable number.

23254179821 is a deficient number, since it is larger than the sum of its proper divisors (1).

23254179821 is an equidigital number, since it uses as much as digits as its factorization.

23254179821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 241920, while the sum is 44.

The spelling of 23254179821 in words is "twenty-three billion, two hundred fifty-four million, one hundred seventy-nine thousand, eight hundred twenty-one".