18797266567 has 2 divisors, whose sum is σ = 18797266568. Its totient is φ = 18797266566.

The previous prime is 18797266531. The next prime is 18797266643. The reversal of 18797266567 is 76566279781.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18797266567 - 2¹⁵ = 18797233799 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18797266499 and 18797266508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18797260567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9398633283 + 9398633284.

It is an arithmetic number, because the mean of its divisors is an integer number (9398633284).

Almost surely, 2^18797266567 is an apocalyptic number.

18797266567 is a deficient number, since it is larger than the sum of its proper divisors (1).

18797266567 is an equidigital number, since it uses as much as digits as its factorization.

18797266567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53343360, while the sum is 64.

The spelling of 18797266567 in words is "eighteen billion, seven hundred ninety-seven million, two hundred sixty-six thousand, five hundred sixty-seven".