2235666777889 has 4 divisors (see below), whose sum is σ = 2236153749760. Its totient is φ = 2235179806020.

The previous prime is 2235666777881. The next prime is 2235666777917. The reversal of 2235666777889 is 9887776665322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2235666777889 - 2³ = 2235666777881 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2235666777881) 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, 243479049 + ... + 243488230.

It is an arithmetic number, because the mean of its divisors is an integer number (559038437440).

Almost surely, 2^{2235666777889} is an apocalyptic number.

It is an amenable number.

2235666777889 is a deficient number, since it is larger than the sum of its proper divisors (486971871).

2235666777889 is an equidigital number, since it uses as much as digits as its factorization.

2235666777889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 486971870.

The product of its digits is 2560481280, while the sum is 76.

The spelling of 2235666777889 in words is "two trillion, two hundred thirty-five billion, six hundred sixty-six million, seven hundred seventy-seven thousand, eight hundred eighty-nine".