2139566233 has 6 divisors (see below), whose sum is σ = 2488883226. Its totient is φ = 1833913872.

The previous prime is 2139566203. The next prime is 2139566239. The reversal of 2139566233 is 3326659312.

It can be written as a sum of positive squares in only one way, i.e., 2017087744 + 122478489 = 44912^2 + 11067^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2139566233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2139566239) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 21832260 + ... + 21832357.

It is an arithmetic number, because the mean of its divisors is an integer number (414813871).

Almost surely, 2^2139566233 is an apocalyptic number.

It is an amenable number.

2139566233 is a deficient number, since it is larger than the sum of its proper divisors (349316993).

2139566233 is an equidigital number, since it uses as much as digits as its factorization.

2139566233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43664631 (or 43664624 counting only the distinct ones).

The product of its digits is 174960, while the sum is 40.

The square root of 2139566233 is about 46255.4454415910. The cubic root of 2139566233 is about 1288.5716684910.

The spelling of 2139566233 in words is "two billion, one hundred thirty-nine million, five hundred sixty-six thousand, two hundred thirty-three".