11105231540520 has 128 divisors (see below), whose sum is σ = 35882124848640. Its totient is φ = 2733314734080.

The previous prime is 11105231540483. The next prime is 11105231540563. The reversal of 11105231540520 is 2504513250111.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15038172 + ... + 15759348.

It is an arithmetic number, because the mean of its divisors is an integer number (280329100380).

Almost surely, 2^{11105231540520} is an apocalyptic number.

11105231540520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11105231540520 is an abundant number, since it is smaller than the sum of its proper divisors (24776893308120).

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

11105231540520 is a wasteful number, since it uses less digits than its factorization.

11105231540520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731075 (or 731071 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

Adding to 11105231540520 its reverse (2504513250111), we get a palindrome (13609744790631).

The spelling of 11105231540520 in words is "eleven trillion, one hundred five billion, two hundred thirty-one million, five hundred forty thousand, five hundred twenty".