11165531442 has 32 divisors (see below), whose sum is σ = 24072840960. Its totient is φ = 3432119040.

The previous prime is 11165531417. The next prime is 11165531449. The reversal of 11165531442 is 24413556111.

It is not an unprimeable number, because it can be changed into a prime (11165531449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7767 + ... + 149637.

It is an arithmetic number, because the mean of its divisors is an integer number (752276280).

Almost surely, 2^11165531442 is an apocalyptic number.

11165531442 is an abundant number, since it is smaller than the sum of its proper divisors (12907309518).

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

11165531442 is a wasteful number, since it uses less digits than its factorization.

11165531442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142898.

The product of its digits is 14400, while the sum is 33.

The spelling of 11165531442 in words is "eleven billion, one hundred sixty-five million, five hundred thirty-one thousand, four hundred forty-two".