550509999984 has 120 divisors (see below), whose sum is σ = 1761819795840. Its totient is φ = 157193737344.

The previous prime is 550509999973. The next prime is 550509999989. The reversal of 550509999984 is 489999905055.

550509999984 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×550509999984² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550509999989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1516527 + ... + 1844145.

It is an arithmetic number, because the mean of its divisors is an integer number (14681831632).

Almost surely, 2^550509999984 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 550509999984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (880909897920).

550509999984 is an abundant number, since it is smaller than the sum of its proper divisors (1211309795856).

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

550509999984 is a wasteful number, since it uses less digits than its factorization.

550509999984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329307 (or 329298 counting only the distinct ones).

The product of its (nonzero) digits is 236196000, while the sum is 72.

The spelling of 550509999984 in words is "five hundred fifty billion, five hundred nine million, nine hundred ninety-nine thousand, nine hundred eighty-four".