2666348780 has 12 divisors (see below), whose sum is σ = 5599332480. Its totient is φ = 1066539504.

The previous prime is 2666348779. The next prime is 2666348803. The reversal of 2666348780 is 878436662.

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 3 ways as a sum of consecutive naturals, for example, 66658700 + ... + 66658739.

It is an arithmetic number, because the mean of its divisors is an integer number (466611040).

Almost surely, 2^2666348780 is an apocalyptic number.

2666348780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2666348780 is an abundant number, since it is smaller than the sum of its proper divisors (2932983700).

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

2666348780 is a wasteful number, since it uses less digits than its factorization.

2666348780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133317448 (or 133317446 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 50.

The square root of 2666348780 is about 51636.6999332839. The cubic root of 2666348780 is about 1386.6674439355.

The spelling of 2666348780 in words is "two billion, six hundred sixty-six million, three hundred forty-eight thousand, seven hundred eighty".