5561395879 has 4 divisors (see below), whose sum is σ = 5989195576. Its totient is φ = 5133596184.

The previous prime is 5561395843. The next prime is 5561395891. The reversal of 5561395879 is 9785931655.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9785931655 = 5 ⋅1957186331.

It is a cyclic number.

It is not a de Polignac number, because 5561395879 - 2⁷ = 5561395751 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5561395579) 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, 213899829 + ... + 213899854.

It is an arithmetic number, because the mean of its divisors is an integer number (1497298894).

Almost surely, 2^5561395879 is an apocalyptic number.

5561395879 is a deficient number, since it is larger than the sum of its proper divisors (427799697).

5561395879 is a wasteful number, since it uses less digits than its factorization.

5561395879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427799696.

The product of its digits is 10206000, while the sum is 58.

The square root of 5561395879 is about 74574.7670395289. The cubic root of 5561395879 is about 1771.7180249270.

The spelling of 5561395879 in words is "five billion, five hundred sixty-one million, three hundred ninety-five thousand, eight hundred seventy-nine".