23855686853 has 2 divisors, whose sum is σ = 23855686854. Its totient is φ = 23855686852.

The previous prime is 23855686823. The next prime is 23855686859. The reversal of 23855686853 is 35868655832.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17816376484 + 6039310369 = 133478^2 + 77713^2 .

It is a cyclic number.

It is not a de Polignac number, because 23855686853 - 2⁸ = 23855686597 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23855686792 and 23855686801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23855686859) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11927843426 + 11927843427.

It is an arithmetic number, because the mean of its divisors is an integer number (11927843427).

Almost surely, 2^23855686853 is an apocalyptic number.

It is an amenable number.

23855686853 is a deficient number, since it is larger than the sum of its proper divisors (1).

23855686853 is an equidigital number, since it uses as much as digits as its factorization.

23855686853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472000, while the sum is 59.

The spelling of 23855686853 in words is "twenty-three billion, eight hundred fifty-five million, six hundred eighty-six thousand, eight hundred fifty-three".