11040561155 has 8 divisors (see below), whose sum is σ = 14267802192. Its totient is φ = 8153029728.

The previous prime is 11040561109. The next prime is 11040561157. The reversal of 11040561155 is 55116504011.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11040561155 - 2¹⁴ = 11040544771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11040561157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84927329 + ... + 84927458.

It is an arithmetic number, because the mean of its divisors is an integer number (1783475274).

Almost surely, 2^11040561155 is an apocalyptic number.

11040561155 is a deficient number, since it is larger than the sum of its proper divisors (3227241037).

11040561155 is a wasteful number, since it uses less digits than its factorization.

11040561155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169854805.

The product of its (nonzero) digits is 3000, while the sum is 29.

The spelling of 11040561155 in words is "eleven billion, forty million, five hundred sixty-one thousand, one hundred fifty-five".