8117404668 has 18 divisors (see below), whose sum is σ = 20518995224. Its totient is φ = 2705801544.

The previous prime is 8117404663. The next prime is 8117404769. The reversal of 8117404668 is 8664047118.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8117404661) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112741696 + ... + 112741767.

Almost surely, 2^8117404668 is an apocalyptic number.

It is an amenable number.

8117404668 is an abundant number, since it is smaller than the sum of its proper divisors (12401590556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8117404668 is a wasteful number, since it uses less digits than its factorization.

8117404668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225483473 (or 225483468 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 45.

The square root of 8117404668 is about 90096.6407142908. The cubic root of 8117404668 is about 2009.7362481573.

The spelling of 8117404668 in words is "eight billion, one hundred seventeen million, four hundred four thousand, six hundred sixty-eight".