56105005011 has 32 divisors (see below), whose sum is σ = 82878529536. Its totient is φ = 33477444000.

The previous prime is 56105005003. The next prime is 56105005027. The reversal of 56105005011 is 11050050165.

It is not a de Polignac number, because 56105005011 - 2³ = 56105005003 is a prime.

It is a super-2 number, since 2×56105005011² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56105006011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 497926 + ... + 600116.

It is an arithmetic number, because the mean of its divisors is an integer number (2589954048).

Almost surely, 2^56105005011 is an apocalyptic number.

56105005011 is a deficient number, since it is larger than the sum of its proper divisors (26773524525).

56105005011 is a wasteful number, since it uses less digits than its factorization.

56105005011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102463.

The product of its (nonzero) digits is 750, while the sum is 24.

Adding to 56105005011 its reverse (11050050165), we get a palindrome (67155055176).

It can be divided in two parts, 5 and 6105005011, that added together give a palindrome (6105005016).

The spelling of 56105005011 in words is "fifty-six billion, one hundred five million, five thousand, eleven".