266612680704 has 48 divisors (see below), whose sum is σ = 710793588960. Its totient is φ = 88870891520.

The previous prime is 266612680703. The next prime is 266612680721. The reversal of 266612680704 is 407086216662.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (266612680703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21690852 + ... + 21703139.

It is an arithmetic number, because the mean of its divisors is an integer number (14808199770).

Almost surely, 2^266612680704 is an apocalyptic number.

266612680704 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

266612680704 is an abundant number, since it is smaller than the sum of its proper divisors (444180908256).

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

266612680704 is an equidigital number, since it uses as much as digits as its factorization.

266612680704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43394016 (or 43393996 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 266612680704 in words is "two hundred sixty-six billion, six hundred twelve million, six hundred eighty thousand, seven hundred four".