8513765055 has 12 divisors (see below), whose sum is σ = 14757192840. Its totient is φ = 4540674672.

The previous prime is 8513765047. The next prime is 8513765093. The reversal of 8513765055 is 5505673158.

8513765055 is a `hidden beast` number, since 8 + 5 + 137 + 6 + 505 + 5 = 666.

It is not a de Polignac number, because 8513765055 - 2³ = 8513765047 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 189194779 = 8513765055 / (8 + 5 + 1 + 3 + 7 + 6 + 5 + 0 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 8513765055.

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, 94597345 + ... + 94597434.

It is an arithmetic number, because the mean of its divisors is an integer number (1229766070).

Almost surely, 2^8513765055 is an apocalyptic number.

8513765055 is a deficient number, since it is larger than the sum of its proper divisors (6243427785).

8513765055 is a wasteful number, since it uses less digits than its factorization.

8513765055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189194790 (or 189194787 counting only the distinct ones).

The product of its (nonzero) digits is 630000, while the sum is 45.

The square root of 8513765055 is about 92270.0658664553. The cubic root of 8513765055 is about 2041.9286079322.

The spelling of 8513765055 in words is "eight billion, five hundred thirteen million, seven hundred sixty-five thousand, fifty-five".