515550055065 has 16 divisors (see below), whose sum is σ = 828579107328. Its totient is φ = 273727022976.

The previous prime is 515550055061. The next prime is 515550055081. The reversal of 515550055065 is 560550055515.

It is not a de Polignac number, because 515550055065 - 2² = 515550055061 is a prime.

It is not an unprimeable number, because it can be changed into a prime (515550055061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77059444 + ... + 77066133.

It is an arithmetic number, because the mean of its divisors is an integer number (51786194208).

Almost surely, 2^515550055065 is an apocalyptic number.

It is an amenable number.

515550055065 is a deficient number, since it is larger than the sum of its proper divisors (313029052263).

515550055065 is a wasteful number, since it uses less digits than its factorization.

515550055065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154125808.

The product of its (nonzero) digits is 468750, while the sum is 42.

The spelling of 515550055065 in words is "five hundred fifteen billion, five hundred fifty million, fifty-five thousand, sixty-five".