67264865761 has 2 divisors, whose sum is σ = 67264865762. Its totient is φ = 67264865760.

The previous prime is 67264865711. The next prime is 67264865777. The reversal of 67264865761 is 16756846276.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66386099025 + 878766736 = 257655^2 + 29644^2 .

It is a cyclic number.

It is not a de Polignac number, because 67264865761 - 2¹⁷ = 67264734689 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67264865696 and 67264865705.

It is not a weakly prime, because it can be changed into another prime (67264865711) 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, 33632432880 + 33632432881.

It is an arithmetic number, because the mean of its divisors is an integer number (33632432881).

Almost surely, 2^67264865761 is an apocalyptic number.

It is an amenable number.

67264865761 is a deficient number, since it is larger than the sum of its proper divisors (1).

67264865761 is an equidigital number, since it uses as much as digits as its factorization.

67264865761 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20321280, while the sum is 58.

The spelling of 67264865761 in words is "sixty-seven billion, two hundred sixty-four million, eight hundred sixty-five thousand, seven hundred sixty-one".