6551274109 has 4 divisors (see below), whose sum is σ = 6614878816. Its totient is φ = 6487669404.

The previous prime is 6551274089. The next prime is 6551274133. The reversal of 6551274109 is 9014721556.

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 6551274109 - 2¹¹ = 6551272061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6551274179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31802199 + ... + 31802404.

It is an arithmetic number, because the mean of its divisors is an integer number (1653719704).

Almost surely, 2^6551274109 is an apocalyptic number.

It is an amenable number.

6551274109 is a deficient number, since it is larger than the sum of its proper divisors (63604707).

6551274109 is a wasteful number, since it uses less digits than its factorization.

6551274109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63604706.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 6551274109 is about 80939.9413701295. The cubic root of 6551274109 is about 1871.1499412825.

The spelling of 6551274109 in words is "six billion, five hundred fifty-one million, two hundred seventy-four thousand, one hundred nine".