8578166212 has 48 divisors (see below), whose sum is σ = 18796482432. Its totient is φ = 3327770880.

The previous prime is 8578166197. The next prime is 8578166213. The reversal of 8578166212 is 2126618758.

It is not an unprimeable number, because it can be changed into a prime (8578166213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11998 + ... + 131530.

It is an arithmetic number, because the mean of its divisors is an integer number (391593384).

Almost surely, 2^8578166212 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8578166212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9398241216).

8578166212 is an abundant number, since it is smaller than the sum of its proper divisors (10218316220).

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

8578166212 is a wasteful number, since it uses less digits than its factorization.

8578166212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119788 (or 119786 counting only the distinct ones).

The product of its digits is 322560, while the sum is 46.

The square root of 8578166212 is about 92618.3902472938. The cubic root of 8578166212 is about 2047.0643057506.

The spelling of 8578166212 in words is "eight billion, five hundred seventy-eight million, one hundred sixty-six thousand, two hundred twelve".