266659643106 has 16 divisors (see below), whose sum is σ = 592576984800. Its totient is φ = 88886547684.

The previous prime is 266659643093. The next prime is 266659643143. The reversal of 266659643106 is 601346956662.

It is a super-2 number, since 2×266659643106² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 4938141539 = 266659643106 / (2 + 6 + 6 + 6 + 5 + 9 + 6 + 4 + 3 + 1 + 0 + 6).

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, 2469070716 + ... + 2469070823.

It is an arithmetic number, because the mean of its divisors is an integer number (37036061550).

Almost surely, 2^266659643106 is an apocalyptic number.

266659643106 is an abundant number, since it is smaller than the sum of its proper divisors (325917341694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266659643106 is a wasteful number, since it uses less digits than its factorization.

266659643106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4938141550 (or 4938141544 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 266659643106 in words is "two hundred sixty-six billion, six hundred fifty-nine million, six hundred forty-three thousand, one hundred six".