56611110105809 has 8 divisors (see below), whose sum is σ = 64705808259648. Its totient is φ = 48518261129520.

The previous prime is 56611110105793. The next prime is 56611110105839. The reversal of 56611110105809 is 90850101111665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56611110105809 - 2⁴ = 56611110105793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56611110105809.

It is not an unprimeable number, because it can be changed into a prime (56611110105839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 462228782 + ... + 462351239.

It is an arithmetic number, because the mean of its divisors is an integer number (8088226032456).

Almost surely, 2^{56611110105809} is an apocalyptic number.

It is an amenable number.

56611110105809 is a deficient number, since it is larger than the sum of its proper divisors (8094698153839).

56611110105809 is an equidigital number, since it uses as much as digits as its factorization.

56611110105809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924588775.

The product of its (nonzero) digits is 64800, while the sum is 44.

The spelling of 56611110105809 in words is "fifty-six trillion, six hundred eleven billion, one hundred ten million, one hundred five thousand, eight hundred nine".