11155512014020 has 96 divisors (see below), whose sum is σ = 27090226590336. Its totient is φ = 3813604300800.

The previous prime is 11155512013993. The next prime is 11155512014021. The reversal of 11155512014020 is 2041021555111.

It is a self number, because there is not a number n which added to its sum of digits gives 11155512014020.

It is not an unprimeable number, because it can be changed into a prime (11155512014021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1613430 + ... + 4991410.

It is an arithmetic number, because the mean of its divisors is an integer number (282189860316).

Almost surely, 2^{11155512014020} is an apocalyptic number.

11155512014020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11155512014020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13545113295168).

11155512014020 is an abundant number, since it is smaller than the sum of its proper divisors (15934714576316).

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

11155512014020 is a wasteful number, since it uses less digits than its factorization.

11155512014020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378901 (or 3378899 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 28.

Adding to 11155512014020 its reverse (2041021555111), we get a palindrome (13196533569131).

The spelling of 11155512014020 in words is "eleven trillion, one hundred fifty-five billion, five hundred twelve million, fourteen thousand, twenty".