23535404173 has 2 divisors, whose sum is σ = 23535404174. Its totient is φ = 23535404172.

The previous prime is 23535404171. The next prime is 23535404203. The reversal of 23535404173 is 37140453532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23520209769 + 15194404 = 153363^2 + 3898^2 .

It is a cyclic number.

It is not a de Polignac number, because 23535404173 - 2¹ = 23535404171 is a prime.

Together with 23535404171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23535404171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11767702086 + 11767702087.

It is an arithmetic number, because the mean of its divisors is an integer number (11767702087).

Almost surely, 2^23535404173 is an apocalyptic number.

It is an amenable number.

23535404173 is a deficient number, since it is larger than the sum of its proper divisors (1).

23535404173 is an equidigital number, since it uses as much as digits as its factorization.

23535404173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 37.

The spelling of 23535404173 in words is "twenty-three billion, five hundred thirty-five million, four hundred four thousand, one hundred seventy-three".