2345777777789 has 4 divisors (see below), whose sum is σ = 2347064547456. Its totient is φ = 2344491008124.

The previous prime is 2345777777779. The next prime is 2345777777803. The reversal of 2345777777789 is 9877777775432.

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 2345777777789 - 2¹⁶ = 2345777712253 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2345777777729) 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 3 ways as a sum of consecutive naturals, for example, 643382099 + ... + 643385744.

It is an arithmetic number, because the mean of its divisors is an integer number (586766136864).

Almost surely, 2^{2345777777789} is an apocalyptic number.

It is an amenable number.

2345777777789 is a deficient number, since it is larger than the sum of its proper divisors (1286769667).

2345777777789 is a wasteful number, since it uses less digits than its factorization.

2345777777789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286769666.

The product of its digits is 7115411520, while the sum is 80.

The spelling of 2345777777789 in words is "two trillion, three hundred forty-five billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, seven hundred eighty-nine".