266615790860 has 48 divisors (see below), whose sum is σ = 572150700576. Its totient is φ = 104323494912.

The previous prime is 266615790803. The next prime is 266615790871. The reversal of 266615790860 is 68097516662.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 266615790796 and 266615790805.

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, 15962 + ... + 730401.

It is an arithmetic number, because the mean of its divisors is an integer number (11919806262).

Almost surely, 2^266615790860 is an apocalyptic number.

266615790860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266615790860 is an abundant number, since it is smaller than the sum of its proper divisors (305534909716).

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

266615790860 is a wasteful number, since it uses less digits than its factorization.

266615790860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 746762 (or 746760 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 266615790860 in words is "two hundred sixty-six billion, six hundred fifteen million, seven hundred ninety thousand, eight hundred sixty".