56105601000989 has 4 divisors (see below), whose sum is σ = 56169140753856. Its totient is φ = 56042061248124.

The previous prime is 56105601000979. The next prime is 56105601001019. The reversal of 56105601000989 is 98900010650165.

56105601000989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 a de Polignac number, because none of the positive numbers 2^k-56105601000989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56105601000929) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 31769875109 + ... + 31769876874.

It is an arithmetic number, because the mean of its divisors is an integer number (14042285188464).

Almost surely, 2^{56105601000989} is an apocalyptic number.

It is an amenable number.

56105601000989 is a deficient number, since it is larger than the sum of its proper divisors (63539752867).

56105601000989 is an equidigital number, since it uses as much as digits as its factorization.

56105601000989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63539752866.

The product of its (nonzero) digits is 583200, while the sum is 50.

The spelling of 56105601000989 in words is "fifty-six trillion, one hundred five billion, six hundred one million, nine hundred eighty-nine", and thus it is an aban number.