550554433044 has 144 divisors (see below), whose sum is σ = 1639978099200. Its totient is φ = 142144578240.

The previous prime is 550554432959. The next prime is 550554433097. The reversal of 550554433044 is 440334455055.

It is a super-2 number, since 2×550554433044² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 550554432987 and 550554433005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 825307 + ... + 1335005.

It is an arithmetic number, because the mean of its divisors is an integer number (11388736800).

Almost surely, 2^550554433044 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 550554433044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (819989049600).

550554433044 is an abundant number, since it is smaller than the sum of its proper divisors (1089423666156).

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

550554433044 is a wasteful number, since it uses less digits than its factorization.

550554433044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509898 (or 509889 counting only the distinct ones).

The product of its (nonzero) digits is 1440000, while the sum is 42.

Adding to 550554433044 its reverse (440334455055), we get a palindrome (990888888099).

The spelling of 550554433044 in words is "five hundred fifty billion, five hundred fifty-four million, four hundred thirty-three thousand, forty-four".