7117971611 has 4 divisors (see below), whose sum is σ = 7132123152. Its totient is φ = 7103820072.

The previous prime is 7117971571. The next prime is 7117971649. The reversal of 7117971611 is 1161797117.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7117971611 - 2⁶ = 7117971547 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7117970611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7075016 + ... + 7076021.

It is an arithmetic number, because the mean of its divisors is an integer number (1783030788).

Almost surely, 2^7117971611 is an apocalyptic number.

7117971611 is a deficient number, since it is larger than the sum of its proper divisors (14151541).

7117971611 is a wasteful number, since it uses less digits than its factorization.

7117971611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14151540.

The product of its digits is 18522, while the sum is 41.

The square root of 7117971611 is about 84368.0722252204. The cubic root of 7117971611 is about 1923.6176378748.

The spelling of 7117971611 in words is "seven billion, one hundred seventeen million, nine hundred seventy-one thousand, six hundred eleven".