56189964889 has 2 divisors, whose sum is σ = 56189964890. Its totient is φ = 56189964888.

The previous prime is 56189964881. The next prime is 56189964899. The reversal of 56189964889 is 98846998165.

56189964889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50407883289 + 5782081600 = 224517^2 + 76040^2 .

It is a cyclic number.

It is not a de Polignac number, because 56189964889 - 2³ = 56189964881 is a prime.

It is not a weakly prime, because it can be changed into another prime (56189964881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28094982444 + 28094982445.

It is an arithmetic number, because the mean of its divisors is an integer number (28094982445).

Almost surely, 2^56189964889 is an apocalyptic number.

It is an amenable number.

56189964889 is a deficient number, since it is larger than the sum of its proper divisors (1).

56189964889 is an equidigital number, since it uses as much as digits as its factorization.

56189964889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 268738560, while the sum is 73.

The spelling of 56189964889 in words is "fifty-six billion, one hundred eighty-nine million, nine hundred sixty-four thousand, eight hundred eighty-nine".