8556516327553 has 16 divisors (see below), whose sum is σ = 9040229078400. Its totient is φ = 8086582887040.

The previous prime is 8556516327481. The next prime is 8556516327559. The reversal of 8556516327553 is 3557236156558.

It is a de Polignac number, because none of the positive numbers 2^k-8556516327553 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 8556516327491 and 8556516327500.

It is not an unprimeable number, because it can be changed into a prime (8556516327559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10332853 + ... + 11130178.

It is an arithmetic number, because the mean of its divisors is an integer number (565014317400).

Almost surely, 2^{8556516327553} is an apocalyptic number.

It is an amenable number.

8556516327553 is a deficient number, since it is larger than the sum of its proper divisors (483712750847).

8556516327553 is a wasteful number, since it uses less digits than its factorization.

8556516327553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21463352.

The product of its digits is 113400000, while the sum is 61.

The spelling of 8556516327553 in words is "eight trillion, five hundred fifty-six billion, five hundred sixteen million, three hundred twenty-seven thousand, five hundred fifty-three".