8646642120 has 64 divisors (see below), whose sum is σ = 26327113920. Its totient is φ = 2271354624.

The previous prime is 8646642101. The next prime is 8646642167. The reversal of 8646642120 is 212466468.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 529687 + ... + 545766.

It is an arithmetic number, because the mean of its divisors is an integer number (411361155).

Almost surely, 2^8646642120 is an apocalyptic number.

It is an amenable number.

8646642120 is an abundant number, since it is smaller than the sum of its proper divisors (17680471800).

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

8646642120 is a wasteful number, since it uses less digits than its factorization.

8646642120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075534 (or 1075530 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 39.

The square root of 8646642120 is about 92987.3223617069. The cubic root of 8646642120 is about 2052.4968284274.

The spelling of 8646642120 in words is "eight billion, six hundred forty-six million, six hundred forty-two thousand, one hundred twenty".