67811458097 has 2 divisors, whose sum is σ = 67811458098. Its totient is φ = 67811458096.

The previous prime is 67811458081. The next prime is 67811458157. The reversal of 67811458097 is 79085411876.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52162448881 + 15649009216 = 228391^2 + 125096^2 .

It is a cyclic number.

It is not a de Polignac number, because 67811458097 - 2⁴ = 67811458081 is a prime.

It is a super-2 number, since 2×67811458097² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (67811458597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33905729048 + 33905729049.

It is an arithmetic number, because the mean of its divisors is an integer number (33905729049).

Almost surely, 2^67811458097 is an apocalyptic number.

It is an amenable number.

67811458097 is a deficient number, since it is larger than the sum of its proper divisors (1).

67811458097 is an equidigital number, since it uses as much as digits as its factorization.

67811458097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 67811458097 in words is "sixty-seven billion, eight hundred eleven million, four hundred fifty-eight thousand, ninety-seven".