2666366123 has 4 divisors (see below), whose sum is σ = 2666471808. Its totient is φ = 2666260440.

The previous prime is 2666366107. The next prime is 2666366179. The reversal of 2666366123 is 3216636662.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2666366123 - 2⁴ = 2666366107 is a prime.

It is a super-2 number, since 2×2666366123² = 14219016603764102258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2666366323) 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, 9590 + ... + 73652.

It is an arithmetic number, because the mean of its divisors is an integer number (666617952).

Almost surely, 2^2666366123 is an apocalyptic number.

2666366123 is a deficient number, since it is larger than the sum of its proper divisors (105685).

2666366123 is an equidigital number, since it uses as much as digits as its factorization.

2666366123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105684.

The product of its digits is 279936, while the sum is 41.

The square root of 2666366123 is about 51636.8678658960. The cubic root of 2666366123 is about 1386.6704504091.

The spelling of 2666366123 in words is "two billion, six hundred sixty-six million, three hundred sixty-six thousand, one hundred twenty-three".