68523123887 has 2 divisors, whose sum is σ = 68523123888. Its totient is φ = 68523123886.

The previous prime is 68523123863. The next prime is 68523123899. The reversal of 68523123887 is 78832132586.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68523123887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68523123187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34261561943 + 34261561944.

It is an arithmetic number, because the mean of its divisors is an integer number (34261561944).

Almost surely, 2^68523123887 is an apocalyptic number.

68523123887 is a deficient number, since it is larger than the sum of its proper divisors (1).

68523123887 is an equidigital number, since it uses as much as digits as its factorization.

68523123887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 53.

The spelling of 68523123887 in words is "sixty-eight billion, five hundred twenty-three million, one hundred twenty-three thousand, eight hundred eighty-seven".