266693338338 has 32 divisors (see below), whose sum is σ = 610623304704. Its totient is φ = 76068280272.

The previous prime is 266693338321. The next prime is 266693338343. The reversal of 266693338338 is 833833396662.

It is a super-2 number, since 2×266693338338² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5384070 + ... + 5433377.

It is an arithmetic number, because the mean of its divisors is an integer number (19081978272).

Almost surely, 2^266693338338 is an apocalyptic number.

266693338338 is an abundant number, since it is smaller than the sum of its proper divisors (343929966366).

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

266693338338 is a wasteful number, since it uses less digits than its factorization.

266693338338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10818046.

The product of its digits is 60466176, while the sum is 60.

The spelling of 266693338338 in words is "two hundred sixty-six billion, six hundred ninety-three million, three hundred thirty-eight thousand, three hundred thirty-eight".