11522645235420 has 144 divisors (see below), whose sum is σ = 35469265021344. Its totient is φ = 2792881625600.

The previous prime is 11522645235329. The next prime is 11522645235427. The reversal of 11522645235420 is 2453254622511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11522645235427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42415462 + ... + 42686258.

It is an arithmetic number, because the mean of its divisors is an integer number (246314340426).

Almost surely, 2^{11522645235420} is an apocalyptic number.

11522645235420 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 11522645235420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17734632510672).

11522645235420 is an abundant number, since it is smaller than the sum of its proper divisors (23946619785924).

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

11522645235420 is a wasteful number, since it uses less digits than its factorization.

11522645235420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276692 (or 276679 counting only the distinct ones).

The product of its (nonzero) digits is 576000, while the sum is 42.

Adding to 11522645235420 its reverse (2453254622511), we get a palindrome (13975899857931).

The spelling of 11522645235420 in words is "eleven trillion, five hundred twenty-two billion, six hundred forty-five million, two hundred thirty-five thousand, four hundred twenty".