7131165855 has 24 divisors (see below), whose sum is σ = 12541425456. Its totient is φ = 3457534080.

The previous prime is 7131165829. The next prime is 7131165857. The reversal of 7131165855 is 5585611317.

It is a happy number.

It is not a de Polignac number, because 7131165855 - 2⁶ = 7131165791 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7131165857) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1962694 + ... + 1966323.

It is an arithmetic number, because the mean of its divisors is an integer number (522559394).

Almost surely, 2^7131165855 is an apocalyptic number.

7131165855 is a deficient number, since it is larger than the sum of its proper divisors (5410259601).

7131165855 is a wasteful number, since it uses less digits than its factorization.

7131165855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3929047 (or 3929036 counting only the distinct ones).

The product of its digits is 126000, while the sum is 42.

The square root of 7131165855 is about 84446.2305553066. The cubic root of 7131165855 is about 1924.8054769426.

The spelling of 7131165855 in words is "seven billion, one hundred thirty-one million, one hundred sixty-five thousand, eight hundred fifty-five".