550398651552 has 72 divisors (see below), whose sum is σ = 1566766888596. Its totient is φ = 183282103296.

The previous prime is 550398651521. The next prime is 550398651557. The reversal of 550398651552 is 255156893055.

It is a happy number.

550398651552 is a `hidden beast` number, since 5 + 5 + 0 + 3 + 9 + 86 + 5 + 1 + 552 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 535525385616 + 14873265936 = 731796^2 + 121956^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (550398651557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 671293 + ... + 1245564.

Almost surely, 2^550398651552 is an apocalyptic number.

It is an amenable number.

550398651552 is an abundant number, since it is smaller than the sum of its proper divisors (1016368237044).

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

550398651552 is a wasteful number, since it uses less digits than its factorization.

550398651552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1917870 (or 1917859 counting only the distinct ones).

The product of its (nonzero) digits is 8100000, while the sum is 54.

The spelling of 550398651552 in words is "five hundred fifty billion, three hundred ninety-eight million, six hundred fifty-one thousand, five hundred fifty-two".