550565004420 has 120 divisors (see below), whose sum is σ = 1739750393304. Its totient is φ = 145745616384.

The previous prime is 550565004419. The next prime is 550565004421. The reversal of 550565004420 is 24400565055.

550565004420 is a `hidden beast` number, since 5 + 50 + 565 + 0 + 0 + 4 + 42 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (550565004419) and next prime (550565004421).

It can be written as a sum of positive squares in 4 ways, for example, as 65589258816 + 484975745604 = 256104^2 + 696402^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (550565004421) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1018407 + ... + 1462286.

Almost surely, 2^550565004420 is an apocalyptic number.

It is an amenable number.

550565004420 is an abundant number, since it is smaller than the sum of its proper divisors (1189185388884).

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

550565004420 is a wasteful number, since it uses less digits than its factorization.

550565004420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2480851 (or 2480840 counting only the distinct ones).

The product of its (nonzero) digits is 120000, while the sum is 36.

Adding to 550565004420 its reverse (24400565055), we get a palindrome (574965569475).

The spelling of 550565004420 in words is "five hundred fifty billion, five hundred sixty-five million, four thousand, four hundred twenty".