11535043542 has 64 divisors (see below), whose sum is σ = 25770700800. Its totient is φ = 3412634400.

The previous prime is 11535043517. The next prime is 11535043571. The reversal of 11535043542 is 24534053511.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 470709 + ... + 494607.

It is an arithmetic number, because the mean of its divisors is an integer number (402667200).

Almost surely, 2^11535043542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11535043542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12885350400).

11535043542 is an abundant number, since it is smaller than the sum of its proper divisors (14235657258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11535043542 is a wasteful number, since it uses less digits than its factorization.

11535043542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24089.

The product of its (nonzero) digits is 36000, while the sum is 33.

The spelling of 11535043542 in words is "eleven billion, five hundred thirty-five million, forty-three thousand, five hundred forty-two".