561688846382239 has 4 divisors (see below), whose sum is σ = 562792360815720. Its totient is φ = 560585331948760.

The previous prime is 561688846382207. The next prime is 561688846382267. The reversal of 561688846382239 is 932283648886165.

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 561688846382239 - 2⁵ = 561688846382207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561688846382269) 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, 551757215977 + ... + 551757216994.

It is an arithmetic number, because the mean of its divisors is an integer number (140698090203930).

Almost surely, 2^{561688846382239} is an apocalyptic number.

561688846382239 is a deficient number, since it is larger than the sum of its proper divisors (1103514433481).

561688846382239 is a wasteful number, since it uses less digits than its factorization.

561688846382239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103514433480.

The product of its digits is 5733089280, while the sum is 79.

The spelling of 561688846382239 in words is "five hundred sixty-one trillion, six hundred eighty-eight billion, eight hundred forty-six million, three hundred eighty-two thousand, two hundred thirty-nine".