6551130749 has 2 divisors, whose sum is σ = 6551130750. Its totient is φ = 6551130748.

The previous prime is 6551130671. The next prime is 6551130763. The reversal of 6551130749 is 9470311556.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5054214649 + 1496916100 = 71093^2 + 38690^2 .

It is a cyclic number.

It is not a de Polignac number, because 6551130749 - 2³² = 2256163453 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6551133749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3275565374 + 3275565375.

It is an arithmetic number, because the mean of its divisors is an integer number (3275565375).

Almost surely, 2^6551130749 is an apocalyptic number.

It is an amenable number.

6551130749 is a deficient number, since it is larger than the sum of its proper divisors (1).

6551130749 is an equidigital number, since it uses as much as digits as its factorization.

6551130749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 113400, while the sum is 41.

The square root of 6551130749 is about 80939.0557703758. The cubic root of 6551130749 is about 1871.1362925373.

The spelling of 6551130749 in words is "six billion, five hundred fifty-one million, one hundred thirty thousand, seven hundred forty-nine".