266336603016660 has 144 divisors (see below), whose sum is σ = 933175092612672. Its totient is φ = 60768422784000.

The previous prime is 266336603016647. The next prime is 266336603016661. The reversal of 266336603016660 is 66610306633662.

It is a super-2 number, since 2×266336603016660² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 266336603016597 and 266336603016606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266336603016661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3956243866 + ... + 3956311185.

It is an arithmetic number, because the mean of its divisors is an integer number (6480382587588).

Almost surely, 2^{266336603016660} is an apocalyptic number.

266336603016660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266336603016660 is an abundant number, since it is smaller than the sum of its proper divisors (666838489596012).

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

266336603016660 is a wasteful number, since it uses less digits than its factorization.

266336603016660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7912555094 (or 7912555089 counting only the distinct ones).

The product of its (nonzero) digits is 15116544, while the sum is 54.

The spelling of 266336603016660 in words is "two hundred sixty-six trillion, three hundred thirty-six billion, six hundred three million, sixteen thousand, six hundred sixty".