2666443155 has 16 divisors (see below), whose sum is σ = 4320314880. Its totient is φ = 1404101088.

The previous prime is 2666443141. The next prime is 2666443229. The reversal of 2666443155 is 5513446662.

It is not a de Polignac number, because 2666443155 - 2⁸ = 2666442899 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1123897 + ... + 1126266.

It is an arithmetic number, because the mean of its divisors is an integer number (270019680).

Almost surely, 2^2666443155 is an apocalyptic number.

2666443155 is a deficient number, since it is larger than the sum of its proper divisors (1653871725).

2666443155 is a wasteful number, since it uses less digits than its factorization.

2666443155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250250.

The product of its digits is 518400, while the sum is 42.

The square root of 2666443155 is about 51637.6137616757. The cubic root of 2666443155 is about 1386.6838040353.

The spelling of 2666443155 in words is "two billion, six hundred sixty-six million, four hundred forty-three thousand, one hundred fifty-five".