551166565852 has 24 divisors (see below), whose sum is σ = 1129219308000. Its totient is φ = 230452919040.

The previous prime is 551166565847. The next prime is 551166565967. The reversal of 551166565852 is 258565661155.

It is a junction number, because it is equal to n+sod(n) for n = 551166565793 and 551166565802.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 240053977 + ... + 240056272.

It is an arithmetic number, because the mean of its divisors is an integer number (47050804500).

Almost surely, 2^551166565852 is an apocalyptic number.

It is an amenable number.

551166565852 is an abundant number, since it is smaller than the sum of its proper divisors (578052742148).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

551166565852 is a wasteful number, since it uses less digits than its factorization.

551166565852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480110301 (or 480110299 counting only the distinct ones).

The product of its digits is 10800000, while the sum is 55.

The spelling of 551166565852 in words is "five hundred fifty-one billion, one hundred sixty-six million, five hundred sixty-five thousand, eight hundred fifty-two".