551486618028 has 36 divisors (see below), whose sum is σ = 1442105814240. Its totient is φ = 177489945696.

The previous prime is 551486618027. The next prime is 551486618069. The reversal of 551486618028 is 820816684155.

551486618028 is a `hidden beast` number, since 5 + 5 + 1 + 486 + 61 + 80 + 28 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×551486618028² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (551486618027) 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 11 ways as a sum of consecutive naturals, for example, 264120900 + ... + 264122987.

It is an arithmetic number, because the mean of its divisors is an integer number (40058494840).

Almost surely, 2^551486618028 is an apocalyptic number.

551486618028 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

551486618028 is an abundant number, since it is smaller than the sum of its proper divisors (890619196212).

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

551486618028 is a wasteful number, since it uses less digits than its factorization.

551486618028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528243926 (or 528243921 counting only the distinct ones).

The product of its (nonzero) digits is 3686400, while the sum is 54.

The spelling of 551486618028 in words is "five hundred fifty-one billion, four hundred eighty-six million, six hundred eighteen thousand, twenty-eight".