56005005501011 has 12 divisors (see below), whose sum is σ = 65148889080240. Its totient is φ = 48004136273520.

The previous prime is 56005005500957. The next prime is 56005005501041. The reversal of 56005005501011 is 11010550050065.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-56005005501011 is a prime.

It is a super-2 number, since 2×56005005501011² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56005005501041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15170981 + ... + 18497801.

It is an arithmetic number, because the mean of its divisors is an integer number (5429074090020).

Almost surely, 2^{56005005501011} is an apocalyptic number.

56005005501011 is a deficient number, since it is larger than the sum of its proper divisors (9143883579229).

56005005501011 is a wasteful number, since it uses less digits than its factorization.

56005005501011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3670394 (or 3670387 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 29.

Adding to 56005005501011 its reverse (11010550050065), we get a palindrome (67015555551076).

The spelling of 56005005501011 in words is "fifty-six trillion, five billion, five million, five hundred one thousand, eleven".