5566857819 has 4 divisors (see below), whose sum is σ = 7422477096. Its totient is φ = 3711238544.

The previous prime is 5566857817. The next prime is 5566857847. The reversal of 5566857819 is 9187586655.

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 5566857819 - 2¹ = 5566857817 is a prime.

It is a super-2 number, since 2×5566857819² = 61979811953922873522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5566857811) 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, 927809634 + ... + 927809639.

It is an arithmetic number, because the mean of its divisors is an integer number (1855619274).

Almost surely, 2^5566857819 is an apocalyptic number.

5566857819 is a deficient number, since it is larger than the sum of its proper divisors (1855619277).

5566857819 is a wasteful number, since it uses less digits than its factorization.

5566857819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855619276.

The product of its digits is 18144000, while the sum is 60.

The square root of 5566857819 is about 74611.3786161333. The cubic root of 5566857819 is about 1772.2978464623.

The spelling of 5566857819 in words is "five billion, five hundred sixty-six million, eight hundred fifty-seven thousand, eight hundred nineteen".