8561873064 has 128 divisors (see below), whose sum is σ = 23220380160. Its totient is φ = 2620489728.

The previous prime is 8561873059. The next prime is 8561873071. The reversal of 8561873064 is 4603781658.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8762944 + ... + 8763920.

It is an arithmetic number, because the mean of its divisors is an integer number (181409220).

Almost surely, 2^8561873064 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 8561873064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11610190080).

8561873064 is an abundant number, since it is smaller than the sum of its proper divisors (14658507096).

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

8561873064 is a wasteful number, since it uses less digits than its factorization.

8561873064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1503 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 8561873064 is about 92530.3899483840. The cubic root of 8561873064 is about 2045.7674372486.

The spelling of 8561873064 in words is "eight billion, five hundred sixty-one million, eight hundred seventy-three thousand, sixty-four".