2666280542923 has 4 divisors (see below), whose sum is σ = 2666286904680. Its totient is φ = 2666274181168.

The previous prime is 2666280542867. The next prime is 2666280542941. The reversal of 2666280542923 is 3292450826662.

It is a happy number.

2666280542923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2666280542923 - 2²¹ = 2666278445771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666280542953) 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, 2504233 + ... + 3406426.

It is an arithmetic number, because the mean of its divisors is an integer number (666571726170).

Almost surely, 2^{2666280542923} is an apocalyptic number.

2666280542923 is a deficient number, since it is larger than the sum of its proper divisors (6361757).

2666280542923 is an equidigital number, since it uses as much as digits as its factorization.

2666280542923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6361756.

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 2666280542923 in words is "two trillion, six hundred sixty-six billion, two hundred eighty million, five hundred forty-two thousand, nine hundred twenty-three".