2133777245 has 4 divisors (see below), whose sum is σ = 2560532700. Its totient is φ = 1707021792.

The previous prime is 2133777221. The next prime is 2133777263. The reversal of 2133777245 is 5427773312.

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 1248774244 + 885003001 = 35338^2 + 29749^2 .

It is a cyclic number.

It is not a de Polignac number, because 2133777245 - 2⁶ = 2133777181 is a prime.

It is a Curzon number.

It is a congruent number.

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, 213377720 + ... + 213377729.

It is an arithmetic number, because the mean of its divisors is an integer number (640133175).

Almost surely, 2^2133777245 is an apocalyptic number.

It is an amenable number.

2133777245 is a deficient number, since it is larger than the sum of its proper divisors (426755455).

2133777245 is an equidigital number, since it uses as much as digits as its factorization.

2133777245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426755454.

The product of its digits is 246960, while the sum is 41.

The square root of 2133777245 is about 46192.8267699651. The cubic root of 2133777245 is about 1287.4084632820.

The spelling of 2133777245 in words is "two billion, one hundred thirty-three million, seven hundred seventy-seven thousand, two hundred forty-five".