23903493853 has 2 divisors, whose sum is σ = 23903493854. Its totient is φ = 23903493852.

The previous prime is 23903493851. The next prime is 23903493863. The reversal of 23903493853 is 35839430932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19610361369 + 4293132484 = 140037^2 + 65522^2 .

It is a cyclic number.

It is not a de Polignac number, because 23903493853 - 2¹ = 23903493851 is a prime.

Together with 23903493851, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 23903493797 and 23903493806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23903493851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11951746926 + 11951746927.

It is an arithmetic number, because the mean of its divisors is an integer number (11951746927).

Almost surely, 2^23903493853 is an apocalyptic number.

It is an amenable number.

23903493853 is a deficient number, since it is larger than the sum of its proper divisors (1).

23903493853 is an equidigital number, since it uses as much as digits as its factorization.

23903493853 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2099520, while the sum is 49.

The spelling of 23903493853 in words is "twenty-three billion, nine hundred three million, four hundred ninety-three thousand, eight hundred fifty-three".