11513321142 has 16 divisors (see below), whose sum is σ = 23044411632. Its totient is φ = 3834812160.

The previous prime is 11513321137. The next prime is 11513321153. The reversal of 11513321142 is 24112331511.

It is a congruent number.

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, 731959 + ... + 747522.

It is an arithmetic number, because the mean of its divisors is an integer number (1440275727).

Almost surely, 2^11513321142 is an apocalyptic number.

11513321142 is an abundant number, since it is smaller than the sum of its proper divisors (11531090490).

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

11513321142 is a wasteful number, since it uses less digits than its factorization.

11513321142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1480783.

The product of its digits is 720, while the sum is 24.

Adding to 11513321142 its reverse (24112331511), we get a palindrome (35625652653).

The spelling of 11513321142 in words is "eleven billion, five hundred thirteen million, three hundred twenty-one thousand, one hundred forty-two".