550551431040 has 256 divisors, whose sum is σ = 1907221377600. Its totient is φ = 134276382720.

The previous prime is 550551431009. The next prime is 550551431069. The reversal of 550551431040 is 40134155055.

It is a junction number, because it is equal to n+sod(n) for n = 550551430992 and 550551431010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2619460 + ... + 2821820.

Almost surely, 2^550551431040 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 550551431040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (953610688800).

550551431040 is an abundant number, since it is smaller than the sum of its proper divisors (1356669946560).

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

550551431040 is a wasteful number, since it uses less digits than its factorization.

550551431040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202505 (or 202493 counting only the distinct ones).

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 550551431040 its reverse (40134155055), we get a palindrome (590685586095).

The spelling of 550551431040 in words is "five hundred fifty billion, five hundred fifty-one million, four hundred thirty-one thousand, forty".