550535889391 has 16 divisors (see below), whose sum is σ = 583111367424. Its totient is φ = 518682092544.

The previous prime is 550535889389. The next prime is 550535889419. The reversal of 550535889391 is 193988535055.

It is a happy number.

550535889391 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 550535889391 - 2¹ = 550535889389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550535886391) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21094036 + ... + 21120118.

It is an arithmetic number, because the mean of its divisors is an integer number (36444460464).

Almost surely, 2^550535889391 is an apocalyptic number.

550535889391 is a deficient number, since it is larger than the sum of its proper divisors (32575478033).

550535889391 is a wasteful number, since it uses less digits than its factorization.

550535889391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39870.

The product of its (nonzero) digits is 29160000, while the sum is 61.

The spelling of 550535889391 in words is "five hundred fifty billion, five hundred thirty-five million, eight hundred eighty-nine thousand, three hundred ninety-one".