5199666281 has 4 divisors (see below), whose sum is σ = 5425738752. Its totient is φ = 4973593812.

The previous prime is 5199666229. The next prime is 5199666287. The reversal of 5199666281 is 1826669915.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 5199666281 - 2¹⁸ = 5199404137 is a prime.

It is a super-2 number, since 2×5199666281² = 54073058867536741922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5199666287) 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, 113036201 + ... + 113036246.

It is an arithmetic number, because the mean of its divisors is an integer number (1356434688).

Almost surely, 2^5199666281 is an apocalyptic number.

It is an amenable number.

5199666281 is a deficient number, since it is larger than the sum of its proper divisors (226072471).

5199666281 is a wasteful number, since it uses less digits than its factorization.

5199666281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226072470.

The product of its digits is 1399680, while the sum is 53.

The square root of 5199666281 is about 72108.7115472188. The cubic root of 5199666281 is about 1732.4411482930.

The spelling of 5199666281 in words is "five billion, one hundred ninety-nine million, six hundred sixty-six thousand, two hundred eighty-one".