56116771285181 has 4 divisors (see below), whose sum is σ = 56116786754364. Its totient is φ = 56116755816000.

The previous prime is 56116771285151. The next prime is 56116771285199. The reversal of 56116771285181 is 18158217761165.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 41931258439225 + 14185512845956 = 6475435^2 + 3766366^2 .

It is a cyclic number.

It is not a de Polignac number, because 56116771285181 - 2⁶ = 56116771285117 is a prime.

It is a super-2 number, since 2×56116771285181² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 56116771285181.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56116771285151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 979211 + ... + 10639191.

It is an arithmetic number, because the mean of its divisors is an integer number (14029196688591).

Almost surely, 2^{56116771285181} is an apocalyptic number.

It is an amenable number.

56116771285181 is a deficient number, since it is larger than the sum of its proper divisors (15469183).

56116771285181 is an equidigital number, since it uses as much as digits as its factorization.

56116771285181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15469182.

The product of its digits is 5644800, while the sum is 59.

The spelling of 56116771285181 in words is "fifty-six trillion, one hundred sixteen billion, seven hundred seventy-one million, two hundred eighty-five thousand, one hundred eighty-one".