11055503511 has 64 divisors (see below), whose sum is σ = 18436387200. Its totient is φ = 6500487168.

The previous prime is 11055503489. The next prime is 11055503521. The reversal of 11055503511 is 11530555011.

11055503511 is a `hidden beast` number, since 1 + 105 + 5 + 503 + 51 + 1 = 666.

It is not a de Polignac number, because 11055503511 - 2¹⁸ = 11055241367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11055503521) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 981765 + ... + 992961.

It is an arithmetic number, because the mean of its divisors is an integer number (288068550).

Almost surely, 2^11055503511 is an apocalyptic number.

11055503511 is a deficient number, since it is larger than the sum of its proper divisors (7380883689).

11055503511 is a wasteful number, since it uses less digits than its factorization.

11055503511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11345 (or 11339 counting only the distinct ones).

The product of its (nonzero) digits is 1875, while the sum is 27.

The spelling of 11055503511 in words is "eleven billion, fifty-five million, five hundred three thousand, five hundred eleven".