266980164889 has 4 divisors (see below), whose sum is σ = 267420001024. Its totient is φ = 266540328756.

The previous prime is 266980164887. The next prime is 266980164901. The reversal of 266980164889 is 988461089662.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 266980164889 - 2¹ = 266980164887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (266980164887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219917157 + ... + 219918370.

It is an arithmetic number, because the mean of its divisors is an integer number (66855000256).

Almost surely, 2^266980164889 is an apocalyptic number.

It is an amenable number.

266980164889 is a deficient number, since it is larger than the sum of its proper divisors (439836135).

266980164889 is an equidigital number, since it uses as much as digits as its factorization.

266980164889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439836134.

The product of its (nonzero) digits is 71663616, while the sum is 67.

The spelling of 266980164889 in words is "two hundred sixty-six billion, nine hundred eighty million, one hundred sixty-four thousand, eight hundred eighty-nine".