23534213887 has 2 divisors, whose sum is σ = 23534213888. Its totient is φ = 23534213886.

The previous prime is 23534213873. The next prime is 23534213957. The reversal of 23534213887 is 78831243532.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23534213887 - 2²⁷ = 23399996159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23534213837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11767106943 + 11767106944.

It is an arithmetic number, because the mean of its divisors is an integer number (11767106944).

Almost surely, 2^23534213887 is an apocalyptic number.

23534213887 is a deficient number, since it is larger than the sum of its proper divisors (1).

23534213887 is an equidigital number, since it uses as much as digits as its factorization.

23534213887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The spelling of 23534213887 in words is "twenty-three billion, five hundred thirty-four million, two hundred thirteen thousand, eight hundred eighty-seven".