11505434545 has 8 divisors (see below), whose sum is σ = 15061659840. Its totient is φ = 8367588720.

The previous prime is 11505434543. The next prime is 11505434561. The reversal of 11505434545 is 54543450511.

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

It is not a de Polignac number, because 11505434545 - 2¹ = 11505434543 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11505434543) 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, 104594805 + ... + 104594914.

It is an arithmetic number, because the mean of its divisors is an integer number (1882707480).

Almost surely, 2^11505434545 is an apocalyptic number.

It is an amenable number.

11505434545 is a deficient number, since it is larger than the sum of its proper divisors (3556225295).

11505434545 is a wasteful number, since it uses less digits than its factorization.

11505434545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209189735.

The product of its (nonzero) digits is 120000, while the sum is 37.

The spelling of 11505434545 in words is "eleven billion, five hundred five million, four hundred thirty-four thousand, five hundred forty-five".