5166808551 has 6 divisors (see below), whose sum is σ = 7463167920. Its totient is φ = 3444539028.

The previous prime is 5166808513. The next prime is 5166808553. The reversal of 5166808551 is 1558086615.

5166808551 is a `hidden beast` number, since 5 + 16 + 6 + 80 + 8 + 551 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-5166808551 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5166808497 and 5166808506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5166808553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 287044911 + ... + 287044928.

It is an arithmetic number, because the mean of its divisors is an integer number (1243861320).

Almost surely, 2^5166808551 is an apocalyptic number.

5166808551 is a deficient number, since it is larger than the sum of its proper divisors (2296359369).

5166808551 is a wasteful number, since it uses less digits than its factorization.

5166808551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 574089845 (or 574089842 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The square root of 5166808551 is about 71880.5157953113. The cubic root of 5166808551 is about 1728.7842205839.

The spelling of 5166808551 in words is "five billion, one hundred sixty-six million, eight hundred eight thousand, five hundred fifty-one".