8719668478 has 4 divisors (see below), whose sum is σ = 13079502720. Its totient is φ = 4359834238.

The previous prime is 8719668421. The next prime is 8719668487. The reversal of 8719668478 is 8748669178.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2179917118 + ... + 2179917121.

It is an arithmetic number, because the mean of its divisors is an integer number (3269875680).

Almost surely, 2^8719668478 is an apocalyptic number.

8719668478 is a deficient number, since it is larger than the sum of its proper divisors (4359834242).

8719668478 is a wasteful number, since it uses less digits than its factorization.

8719668478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4359834241.

The product of its digits is 32514048, while the sum is 64.

The square root of 8719668478 is about 93379.1651172787. The cubic root of 8719668478 is about 2058.2588484570.

The spelling of 8719668478 in words is "eight billion, seven hundred nineteen million, six hundred sixty-eight thousand, four hundred seventy-eight".