2660289194867 has 2 divisors, whose sum is σ = 2660289194868. Its totient is φ = 2660289194866.

The previous prime is 2660289194851. The next prime is 2660289194881. The reversal of 2660289194867 is 7684919820662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2660289194867 - 2⁴ = 2660289194851 is a prime.

It is a super-2 number, since 2×2660289194867² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2660289194797 and 2660289194806.

It is not a weakly prime, because it can be changed into another prime (2660289194837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330144597433 + 1330144597434.

It is an arithmetic number, because the mean of its divisors is an integer number (1330144597434).

Almost surely, 2^{2660289194867} is an apocalyptic number.

2660289194867 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660289194867 is an equidigital number, since it uses as much as digits as its factorization.

2660289194867 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 125411328, while the sum is 68.

The spelling of 2660289194867 in words is "two trillion, six hundred sixty billion, two hundred eighty-nine million, one hundred ninety-four thousand, eight hundred sixty-seven".