8421671711 has 4 divisors (see below), whose sum is σ = 8458447800. Its totient is φ = 8384895624.

The previous prime is 8421671693. The next prime is 8421671723. The reversal of 8421671711 is 1171761248.

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 8421671711 - 2¹⁰ = 8421670687 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8421611711) 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, 18387701 + ... + 18388158.

It is an arithmetic number, because the mean of its divisors is an integer number (2114611950).

Almost surely, 2^8421671711 is an apocalyptic number.

8421671711 is a deficient number, since it is larger than the sum of its proper divisors (36776089).

8421671711 is a wasteful number, since it uses less digits than its factorization.

8421671711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36776088.

The product of its digits is 18816, while the sum is 38.

The square root of 8421671711 is about 91769.6666170255. Note that the first 4 decimals coincide. The cubic root of 8421671711 is about 2034.5393907886.

The spelling of 8421671711 in words is "eight billion, four hundred twenty-one million, six hundred seventy-one thousand, seven hundred eleven".