550513387509 has 8 divisors (see below), whose sum is σ = 735181113792. Its totient is φ = 366427293120.

The previous prime is 550513387483. The next prime is 550513387537. The reversal of 550513387509 is 905783315055.

It is a happy number.

550513387509 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 550513387509 - 2³¹ = 548365903861 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (550513387559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145405764 + ... + 145409549.

It is an arithmetic number, because the mean of its divisors is an integer number (91897639224).

Almost surely, 2^550513387509 is an apocalyptic number.

It is an amenable number.

550513387509 is a deficient number, since it is larger than the sum of its proper divisors (184667726283).

550513387509 is a wasteful number, since it uses less digits than its factorization.

550513387509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290815947.

The product of its (nonzero) digits is 2835000, while the sum is 51.

The spelling of 550513387509 in words is "five hundred fifty billion, five hundred thirteen million, three hundred eighty-seven thousand, five hundred nine".