550355002640 has 20 divisors (see below), whose sum is σ = 1279575381324. Its totient is φ = 220142001024.

The previous prime is 550355002597. The next prime is 550355002643. The reversal of 550355002640 is 46200553055.

It can be written as a sum of positive squares in 2 ways, for example, as 237453493264 + 312901509376 = 487292^2 + 559376^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 550355002640.

It is not an unprimeable number, because it can be changed into a prime (550355002643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3439718687 + ... + 3439718846.

Almost surely, 2^550355002640 is an apocalyptic number.

It is an amenable number.

550355002640 is an abundant number, since it is smaller than the sum of its proper divisors (729220378684).

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

550355002640 is a wasteful number, since it uses less digits than its factorization.

550355002640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6879437546 (or 6879437540 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 35.

Adding to 550355002640 its reverse (46200553055), we get a palindrome (596555555695).

The spelling of 550355002640 in words is "five hundred fifty billion, three hundred fifty-five million, two thousand, six hundred forty".