8473556665540 has 24 divisors (see below), whose sum is σ = 17994406855320. Its totient is φ = 3351339264768.

The previous prime is 8473556665489. The next prime is 8473556665579. The reversal of 8473556665540 is 455666553748.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 69135340096 + 8404421325444 = 262936^2 + 2899038^2 .

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2380210767 + ... + 2380214326.

It is an arithmetic number, because the mean of its divisors is an integer number (749766952305).

Almost surely, 2^{8473556665540} is an apocalyptic number.

It is an amenable number.

8473556665540 is an abundant number, since it is smaller than the sum of its proper divisors (9520850189780).

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

8473556665540 is a wasteful number, since it uses less digits than its factorization.

8473556665540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4760425191 (or 4760425189 counting only the distinct ones).

The product of its (nonzero) digits is 362880000, while the sum is 64.

The spelling of 8473556665540 in words is "eight trillion, four hundred seventy-three billion, five hundred fifty-six million, six hundred sixty-five thousand, five hundred forty".