11355120520000 has 140 divisors (see below), whose sum is σ = 29127942777780. Its totient is φ = 4385425408000.

The previous prime is 11355120519997. The next prime is 11355120520021. The reversal of 11355120520000 is 2502155311.

It can be written as a sum of positive squares in 10 ways, for example, as 9522606000384 + 1832514519616 = 3085872^2 + 1353704^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3734449 + ... + 6054448.

It is an arithmetic number, because the mean of its divisors is an integer number (208056734127).

Almost surely, 2^{11355120520000} is an apocalyptic number.

11355120520000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11355120520000 is an abundant number, since it is smaller than the sum of its proper divisors (17772822257780).

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

11355120520000 is an frugal number, since it uses more digits than its factorization.

11355120520000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788958 (or 9788933 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 25.

Adding to 11355120520000 its reverse (2502155311), we get a palindrome (11357622675311).

The spelling of 11355120520000 in words is "eleven trillion, three hundred fifty-five billion, one hundred twenty million, five hundred twenty thousand".