11550431442 has 16 divisors (see below), whose sum is σ = 25200941472. Its totient is φ = 3500130720.

The previous prime is 11550431437. The next prime is 11550431491. The reversal of 11550431442 is 24413405511.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87503203 + ... + 87503334.

It is an arithmetic number, because the mean of its divisors is an integer number (1575058842).

Almost surely, 2^11550431442 is an apocalyptic number.

11550431442 is an abundant number, since it is smaller than the sum of its proper divisors (13650510030).

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

11550431442 is a wasteful number, since it uses less digits than its factorization.

11550431442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175006553.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 11550431442 its reverse (24413405511), we get a palindrome (35963836953).

The spelling of 11550431442 in words is "eleven billion, five hundred fifty million, four hundred thirty-one thousand, four hundred forty-two".