5666873818 has 16 divisors (see below), whose sum is σ = 8797367880. Its totient is φ = 2734505536.

The previous prime is 5666873813. The next prime is 5666873843. The reversal of 5666873818 is 8183786665.

It can be written as a sum of positive squares in 4 ways, for example, as 2734976209 + 2931897609 = 52297^2 + 54147^2 .

It is a super-2 number, since 2×5666873818² = 64226917738267794248, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is not an unprimeable number, because it can be changed into a prime (5666873813) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115980 + ... + 157432.

Almost surely, 2^5666873818 is an apocalyptic number.

5666873818 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

5666873818 is a deficient number, since it is larger than the sum of its proper divisors (3130494062).

5666873818 is a wasteful number, since it uses less digits than its factorization.

5666873818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43841.

The product of its digits is 11612160, while the sum is 58.

The square root of 5666873818 is about 75278.6411806164. The cubic root of 5666873818 is about 1782.8488045606.

The spelling of 5666873818 in words is "five billion, six hundred sixty-six million, eight hundred seventy-three thousand, eight hundred eighteen".