8171661471 has 4 divisors (see below), whose sum is σ = 10895548632. Its totient is φ = 5447774312.

The previous prime is 8171661461. The next prime is 8171661503. The reversal of 8171661471 is 1741661718.

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 8171661471 - 2¹⁷ = 8171530399 is a prime.

It is a super-3 number, since 3×8171661471³ (a number of 31 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8171661431) 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, 1361943576 + ... + 1361943581.

It is an arithmetic number, because the mean of its divisors is an integer number (2723887158).

Almost surely, 2^8171661471 is an apocalyptic number.

8171661471 is a deficient number, since it is larger than the sum of its proper divisors (2723887161).

8171661471 is a wasteful number, since it uses less digits than its factorization.

8171661471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2723887160.

The product of its digits is 56448, while the sum is 42.

The square root of 8171661471 is about 90397.2426072831. The cubic root of 8171661471 is about 2014.2040068684.

The spelling of 8171661471 in words is "eight billion, one hundred seventy-one million, six hundred sixty-one thousand, four hundred seventy-one".