23531193756853 has 2 divisors, whose sum is σ = 23531193756854. Its totient is φ = 23531193756852.

The previous prime is 23531193756781. The next prime is 23531193756869. The reversal of 23531193756853 is 35865739113532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14972859992484 + 8558333764369 = 3869478^2 + 2925463^2 .

It is a cyclic number.

It is not a de Polignac number, because 23531193756853 - 2⁹ = 23531193756341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23531193756791 and 23531193756800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23531193756053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11765596878426 + 11765596878427.

It is an arithmetic number, because the mean of its divisors is an integer number (11765596878427).

Almost surely, 2^{23531193756853} is an apocalyptic number.

It is an amenable number.

23531193756853 is a deficient number, since it is larger than the sum of its proper divisors (1).

23531193756853 is an equidigital number, since it uses as much as digits as its factorization.

23531193756853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 61236000, while the sum is 61.

The spelling of 23531193756853 in words is "twenty-three trillion, five hundred thirty-one billion, one hundred ninety-three million, seven hundred fifty-six thousand, eight hundred fifty-three".