11055642511 has 4 divisors (see below), whose sum is σ = 11055853000. Its totient is φ = 11055432024.

The previous prime is 11055642509. The next prime is 11055642523. The reversal of 11055642511 is 11524655011.

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 is a cyclic number.

It is not a de Polignac number, because 11055642511 - 2¹ = 11055642509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11055649511) 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, 45805 + ... + 155593.

It is an arithmetic number, because the mean of its divisors is an integer number (2763963250).

Almost surely, 2^11055642511 is an apocalyptic number.

11055642511 is a deficient number, since it is larger than the sum of its proper divisors (210489).

11055642511 is a wasteful number, since it uses less digits than its factorization.

11055642511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210488.

The product of its (nonzero) digits is 6000, while the sum is 31.

The spelling of 11055642511 in words is "eleven billion, fifty-five million, six hundred forty-two thousand, five hundred eleven".