8521968179 has 4 divisors (see below), whose sum is σ = 8970492840. Its totient is φ = 8073443520.

The previous prime is 8521968163. The next prime is 8521968181. The reversal of 8521968179 is 9718691258.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9718691258 = 2 ⋅4859345629.

It is not a de Polignac number, because 8521968179 - 2⁴ = 8521968163 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8521968109) 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, 224262302 + ... + 224262339.

It is an arithmetic number, because the mean of its divisors is an integer number (2242623210).

Almost surely, 2^8521968179 is an apocalyptic number.

8521968179 is a deficient number, since it is larger than the sum of its proper divisors (448524661).

8521968179 is a wasteful number, since it uses less digits than its factorization.

8521968179 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448524660.

The product of its digits is 2177280, while the sum is 56.

The square root of 8521968179 is about 92314.5068718888. The cubic root of 8521968179 is about 2042.5842057264.

The spelling of 8521968179 in words is "eight billion, five hundred twenty-one million, nine hundred sixty-eight thousand, one hundred seventy-nine".