5666121234 has 40 divisors (see below), whose sum is σ = 12700614960. Its totient is φ = 1888066584.

The previous prime is 5666121179. The next prime is 5666121257. The reversal of 5666121234 is 4321216665.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 885057 + ... + 891435.

It is an arithmetic number, because the mean of its divisors is an integer number (317515374).

Almost surely, 2^5666121234 is an apocalyptic number.

5666121234 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

5666121234 is an abundant number, since it is smaller than the sum of its proper divisors (7034493726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5666121234 is a wasteful number, since it uses less digits than its factorization.

5666121234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11876 (or 11867 counting only the distinct ones).

The product of its digits is 51840, while the sum is 36.

The square root of 5666121234 is about 75273.6423590622. The cubic root of 5666121234 is about 1782.7698778643.

Adding to 5666121234 its reverse (4321216665), we get a palindrome (9987337899).

The spelling of 5666121234 in words is "five billion, six hundred sixty-six million, one hundred twenty-one thousand, two hundred thirty-four".