2117771339 has 4 divisors (see below), whose sum is σ = 2118039000. Its totient is φ = 2117503680.

The previous prime is 2117771329. The next prime is 2117771351. The reversal of 2117771339 is 9331777112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2117771339 - 2⁸ = 2117771083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2117771296 and 2117771305.

It is not an unprimeable number, because it can be changed into a prime (2117771329) 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, 121589 + ... + 137910.

It is an arithmetic number, because the mean of its divisors is an integer number (529509750).

Almost surely, 2^2117771339 is an apocalyptic number.

2117771339 is a deficient number, since it is larger than the sum of its proper divisors (267661).

2117771339 is an equidigital number, since it uses as much as digits as its factorization.

2117771339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267660.

The product of its digits is 55566, while the sum is 41.

The square root of 2117771339 is about 46019.2496570729. The cubic root of 2117771339 is about 1284.1813413112.

The spelling of 2117771339 in words is "two billion, one hundred seventeen million, seven hundred seventy-one thousand, three hundred thirty-nine".