56116117220 has 24 divisors (see below), whose sum is σ = 117854138808. Its totient is φ = 22444486400.

The previous prime is 56116117201. The next prime is 56116117223. The reversal of 56116117220 is 2271161165.

It can be written as a sum of positive squares in 4 ways, for example, as 18069274084 + 38046843136 = 134422^2 + 195056^2 .

It is a super-2 number, since 2×56116117220² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56116117223) 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, 124310 + ... + 357330.

It is an arithmetic number, because the mean of its divisors is an integer number (4910589117).

Almost surely, 2^56116117220 is an apocalyptic number.

It is an amenable number.

56116117220 is an abundant number, since it is smaller than the sum of its proper divisors (61738021588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56116117220 is a wasteful number, since it uses less digits than its factorization.

56116117220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245071 (or 245069 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 32.

Adding to 56116117220 its reverse (2271161165), we get a palindrome (58387278385).

The spelling of 56116117220 in words is "fifty-six billion, one hundred sixteen million, one hundred seventeen thousand, two hundred twenty".