8505135550 has 24 divisors (see below), whose sum is σ = 16187452776. Its totient is φ = 3322935840.

The previous prime is 8505135521. The next prime is 8505135599. The reversal of 8505135550 is 555315058.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1975789 + ... + 1980088.

It is an arithmetic number, because the mean of its divisors is an integer number (674477199).

Almost surely, 2^8505135550 is an apocalyptic number.

8505135550 is a deficient number, since it is larger than the sum of its proper divisors (7682317226).

8505135550 is a wasteful number, since it uses less digits than its factorization.

8505135550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3955932 (or 3955927 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 37.

The square root of 8505135550 is about 92223.2917976798. The cubic root of 8505135550 is about 2041.2384788752.

The spelling of 8505135550 in words is "eight billion, five hundred five million, one hundred thirty-five thousand, five hundred fifty".