6971571161 has 8 divisors (see below), whose sum is σ = 7143639048. Its totient is φ = 6799600000.

The previous prime is 6971571151. The next prime is 6971571199. The reversal of 6971571161 is 1611751796.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1033944025 + 5937627136 = 32155^2 + 77056^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6971571161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6971571151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134411 + ... + 178911.

It is an arithmetic number, because the mean of its divisors is an integer number (892954881).

Almost surely, 2^6971571161 is an apocalyptic number.

It is an amenable number.

6971571161 is a deficient number, since it is larger than the sum of its proper divisors (172067887).

6971571161 is a wasteful number, since it uses less digits than its factorization.

6971571161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48363.

The product of its digits is 79380, while the sum is 44.

The square root of 6971571161 is about 83495.9349968608. The cubic root of 6971571161 is about 1910.3380304108.

The spelling of 6971571161 in words is "six billion, nine hundred seventy-one million, five hundred seventy-one thousand, one hundred sixty-one".