2666142145 has 4 divisors (see below), whose sum is σ = 3199370580. Its totient is φ = 2132913712.

The previous prime is 2666142133. The next prime is 2666142161. The reversal of 2666142145 is 5412416662.

2666142145 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 can be written as a sum of positive squares in 2 ways, for example, as 521711281 + 2144430864 = 22841^2 + 46308^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2666142145 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 266614210 + ... + 266614219.

It is an arithmetic number, because the mean of its divisors is an integer number (799842645).

Almost surely, 2^2666142145 is an apocalyptic number.

It is an amenable number.

2666142145 is a deficient number, since it is larger than the sum of its proper divisors (533228435).

2666142145 is an equidigital number, since it uses as much as digits as its factorization.

2666142145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533228434.

The product of its digits is 69120, while the sum is 37.

The square root of 2666142145 is about 51634.6990404708. The cubic root of 2666142145 is about 1386.6316219866.

The spelling of 2666142145 in words is "two billion, six hundred sixty-six million, one hundred forty-two thousand, one hundred forty-five".