855264015585 has 120 divisors (see below), whose sum is σ = 1731348137064. Its totient is φ = 390544519680.

The previous prime is 855264015577. The next prime is 855264015601. The reversal of 855264015585 is 585510462558.

It is a happy number.

855264015585 is a `hidden beast` number, since 8 + 5 + 5 + 2 + 6 + 40 + 15 + 585 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 373237908624 + 482026106961 = 610932^2 + 694281^2 .

It is not a de Polignac number, because 855264015585 - 2³ = 855264015577 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 110310069 + ... + 110317821.

Almost surely, 2^855264015585 is an apocalyptic number.

It is an amenable number.

855264015585 is an abundant number, since it is smaller than the sum of its proper divisors (876084121479).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855264015585 is a wasteful number, since it uses less digits than its factorization.

855264015585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8813 (or 8789 counting only the distinct ones).

The product of its (nonzero) digits is 9600000, while the sum is 54.

The spelling of 855264015585 in words is "eight hundred fifty-five billion, two hundred sixty-four million, fifteen thousand, five hundred eighty-five".