67646469161 has 2 divisors, whose sum is σ = 67646469162. Its totient is φ = 67646469160.

The previous prime is 67646469109. The next prime is 67646469193. The reversal of 67646469161 is 16196464676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60498781225 + 7147687936 = 245965^2 + 84544^2 .

It is a cyclic number.

It is not a de Polignac number, because 67646469161 - 2¹⁴ = 67646452777 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67646469097 and 67646469106.

It is not a weakly prime, because it can be changed into another prime (67646469061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33823234580 + 33823234581.

It is an arithmetic number, because the mean of its divisors is an integer number (33823234581).

Almost surely, 2^67646469161 is an apocalyptic number.

It is an amenable number.

67646469161 is a deficient number, since it is larger than the sum of its proper divisors (1).

67646469161 is an equidigital number, since it uses as much as digits as its factorization.

67646469161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7838208, while the sum is 56.

The spelling of 67646469161 in words is "sixty-seven billion, six hundred forty-six million, four hundred sixty-nine thousand, one hundred sixty-one".