5516656551 has 20 divisors (see below), whose sum is σ = 9418208272. Its totient is φ = 3152374848.

The previous prime is 5516656547. The next prime is 5516656571. The reversal of 5516656551 is 1556566155.

It is not a de Polignac number, because 5516656551 - 2² = 5516656547 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5516656497 and 5516656506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5516656511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4864210 + ... + 4865343.

Almost surely, 2^5516656551 is an apocalyptic number.

5516656551 is a deficient number, since it is larger than the sum of its proper divisors (3901551721).

5516656551 is an equidigital number, since it uses as much as digits as its factorization.

5516656551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9729572 (or 9729563 counting only the distinct ones).

The product of its digits is 675000, while the sum is 45.

The square root of 5516656551 is about 74274.1984204475. The cubic root of 5516656551 is about 1766.9542938878.

The spelling of 5516656551 in words is "five billion, five hundred sixteen million, six hundred fifty-six thousand, five hundred fifty-one".