11521333455140 has 12 divisors (see below), whose sum is σ = 24194800255836. Its totient is φ = 4608533382048.

The previous prime is 11521333455097. The next prime is 11521333455169. The reversal of 11521333455140 is 4155433312511.

11521333455140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6009008963584 + 5512324491556 = 2451328^2 + 2347834^2 .

It is a super-2 number, since 2×11521333455140² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11521333455094 and 11521333455103.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288033336359 + ... + 288033336398.

It is an arithmetic number, because the mean of its divisors is an integer number (2016233354653).

Almost surely, 2^{11521333455140} is an apocalyptic number.

11521333455140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11521333455140 is an abundant number, since it is smaller than the sum of its proper divisors (12673466800696).

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

11521333455140 is a wasteful number, since it uses less digits than its factorization.

11521333455140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576066672766 (or 576066672764 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

Adding to 11521333455140 its reverse (4155433312511), we get a palindrome (15676766767651).

The spelling of 11521333455140 in words is "eleven trillion, five hundred twenty-one billion, three hundred thirty-three million, four hundred fifty-five thousand, one hundred forty".