11019617955 has 24 divisors (see below), whose sum is σ = 19544876208. Its totient is φ = 5740451136.

The previous prime is 11019617933. The next prime is 11019617989. The reversal of 11019617955 is 55971691011.

It is a happy number.

11019617955 is a `hidden beast` number, since 1 + 10 + 19 + 617 + 9 + 5 + 5 = 666.

It is not a de Polignac number, because 11019617955 - 2²² = 11015423651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 11019617955.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2845512 + ... + 2849381.

It is an arithmetic number, because the mean of its divisors is an integer number (814369842).

Almost surely, 2^11019617955 is an apocalyptic number.

11019617955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11019617955 is a deficient number, since it is larger than the sum of its proper divisors (8525258253).

11019617955 is a wasteful number, since it uses less digits than its factorization.

11019617955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5694947 (or 5694944 counting only the distinct ones).

The product of its (nonzero) digits is 85050, while the sum is 45.

The spelling of 11019617955 in words is "eleven billion, nineteen million, six hundred seventeen thousand, nine hundred fifty-five".