56001001111 has 8 divisors (see below), whose sum is σ = 61596895248. Its totient is φ = 50909999800.

The previous prime is 56001001099. The next prime is 56001001171. The reversal of 56001001111 is 11110010065.

It is not a de Polignac number, because 56001001111 - 2⁷ = 56001000983 is a prime.

It is a super-2 number, since 2×56001001111² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56001001171) 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, 21035860 + ... + 21038521.

It is an arithmetic number, because the mean of its divisors is an integer number (7699611906).

Almost surely, 2^56001001111 is an apocalyptic number.

56001001111 is a deficient number, since it is larger than the sum of its proper divisors (5595894137).

56001001111 is an equidigital number, since it uses as much as digits as its factorization.

56001001111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42074414 (or 42074392 counting only the distinct ones).

The product of its (nonzero) digits is 30, while the sum is 16.

Adding to 56001001111 its reverse (11110010065), we get a palindrome (67111011176).

The spelling of 56001001111 in words is "fifty-six billion, one million, one thousand, one hundred eleven".