67090888790789 has 2 divisors, whose sum is σ = 67090888790790. Its totient is φ = 67090888790788.

The previous prime is 67090888790759. The next prime is 67090888790797. The reversal of 67090888790789 is 98709788809076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62328782840164 + 4762105950625 = 7894858^2 + 2182225^2 .

It is a cyclic number.

It is not a de Polignac number, because 67090888790789 - 2¹² = 67090888786693 is a prime.

It is a super-2 number, since 2×67090888790789² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 67090888790789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67090888790729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33545444395394 + 33545444395395.

It is an arithmetic number, because the mean of its divisors is an integer number (33545444395395).

Almost surely, 2^{67090888790789} is an apocalyptic number.

It is an amenable number.

67090888790789 is a deficient number, since it is larger than the sum of its proper divisors (1).

67090888790789 is an equidigital number, since it uses as much as digits as its factorization.

67090888790789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6145155072, while the sum is 86.

The spelling of 67090888790789 in words is "sixty-seven trillion, ninety billion, eight hundred eighty-eight million, seven hundred ninety thousand, seven hundred eighty-nine".