266686686662 has 16 divisors (see below), whose sum is σ = 440258315472. Its totient is φ = 120148465920.

The previous prime is 266686686611. The next prime is 266686686671.

266686686662 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×266686686662² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266686686592 and 266686686601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53635223 + ... + 53640194.

It is an arithmetic number, because the mean of its divisors is an integer number (27516144717).

Almost surely, 2^266686686662 is an apocalyptic number.

266686686662 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

266686686662 is a deficient number, since it is larger than the sum of its proper divisors (173571628810).

266686686662 is a wasteful number, since it uses less digits than its factorization.

266686686662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107275543.

The product of its digits is 429981696, while the sum is 68.

The spelling of 266686686662 in words is "two hundred sixty-six billion, six hundred eighty-six million, six hundred eighty-six thousand, six hundred sixty-two".