67281269791 has 2 divisors, whose sum is σ = 67281269792. Its totient is φ = 67281269790.

The previous prime is 67281269753. The next prime is 67281269827. The reversal of 67281269791 is 19796218276.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67281269791 - 2⁷ = 67281269663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67281269711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33640634895 + 33640634896.

It is an arithmetic number, because the mean of its divisors is an integer number (33640634896).

Almost surely, 2^67281269791 is an apocalyptic number.

67281269791 is a deficient number, since it is larger than the sum of its proper divisors (1).

67281269791 is an equidigital number, since it uses as much as digits as its factorization.

67281269791 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4572288, while the sum is 58.

The spelling of 67281269791 in words is "sixty-seven billion, two hundred eighty-one million, two hundred sixty-nine thousand, seven hundred ninety-one".