68135461223 has 2 divisors, whose sum is σ = 68135461224. Its totient is φ = 68135461222.

The previous prime is 68135461123. The next prime is 68135461291. The reversal of 68135461223 is 32216453186.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68135461223 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68135461123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34067730611 + 34067730612.

It is an arithmetic number, because the mean of its divisors is an integer number (34067730612).

Almost surely, 2^68135461223 is an apocalyptic number.

68135461223 is a deficient number, since it is larger than the sum of its proper divisors (1).

68135461223 is an equidigital number, since it uses as much as digits as its factorization.

68135461223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 207360, while the sum is 41.

The spelling of 68135461223 in words is "sixty-eight billion, one hundred thirty-five million, four hundred sixty-one thousand, two hundred twenty-three".