815575165255 has 16 divisors (see below), whose sum is σ = 979477142400. Its totient is φ = 651935733280.

The previous prime is 815575165253. The next prime is 815575165261. The reversal of 815575165255 is 552561575518.

815575165255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 815575165255 - 2¹ = 815575165253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 815575165196 and 815575165205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (815575165253) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34647840 + ... + 34671370.

It is an arithmetic number, because the mean of its divisors is an integer number (61217321400).

Almost surely, 2^815575165255 is an apocalyptic number.

815575165255 is a deficient number, since it is larger than the sum of its proper divisors (163901977145).

815575165255 is a wasteful number, since it uses less digits than its factorization.

815575165255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28814.

The product of its digits is 10500000, while the sum is 55.

The spelling of 815575165255 in words is "eight hundred fifteen billion, five hundred seventy-five million, one hundred sixty-five thousand, two hundred fifty-five".