8555632540 has 96 divisors (see below), whose sum is σ = 22145397120. Its totient is φ = 2703753216.

The previous prime is 8555632513. The next prime is 8555632573. The reversal of 8555632540 is 452365558.

It is a congruent number.

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, 1396524 + ... + 1402636.

It is an arithmetic number, because the mean of its divisors is an integer number (230681220).

Almost surely, 2^8555632540 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 8555632540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11072698560).

8555632540 is an abundant number, since it is smaller than the sum of its proper divisors (13589764580).

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

8555632540 is a wasteful number, since it uses less digits than its factorization.

8555632540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6911 (or 6909 counting only the distinct ones).

The product of its (nonzero) digits is 720000, while the sum is 43.

The square root of 8555632540 is about 92496.6623181615. The cubic root of 8555632540 is about 2045.2702810885.

The spelling of 8555632540 in words is "eight billion, five hundred fifty-five million, six hundred thirty-two thousand, five hundred forty".