20556116333 has 4 divisors (see below), whose sum is σ = 20659413600. Its totient is φ = 20452819068.

The previous prime is 20556116323. The next prime is 20556116341. The reversal of 20556116333 is 33361165502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20556116333 - 2²⁸ = 20287680877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20556116293 and 20556116302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20556116323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51648335 + ... + 51648732.

It is an arithmetic number, because the mean of its divisors is an integer number (5164853400).

Almost surely, 2^20556116333 is an apocalyptic number.

It is an amenable number.

20556116333 is a deficient number, since it is larger than the sum of its proper divisors (103297267).

20556116333 is a wasteful number, since it uses less digits than its factorization.

20556116333 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103297266.

The product of its (nonzero) digits is 48600, while the sum is 35.

The spelling of 20556116333 in words is "twenty billion, five hundred fifty-six million, one hundred sixteen thousand, three hundred thirty-three".