11521202522643 has 24 divisors (see below), whose sum is σ = 18403315622640. Its totient is φ = 6886895650560.

The previous prime is 11521202522629. The next prime is 11521202522651. The reversal of 11521202522643 is 34622520212511.

11521202522643 is a `hidden beast` number, since 1 + 1 + 5 + 2 + 1 + 2 + 0 + 2 + 5 + 2 + 2 + 643 = 666.

It is not a de Polignac number, because 11521202522643 - 2⁵ = 11521202522611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11521202522598 and 11521202522607.

It is not an unprimeable number, because it can be changed into a prime (11521202522623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 797087178 + ... + 797101631.

It is an arithmetic number, because the mean of its divisors is an integer number (766804817610).

Almost surely, 2^{11521202522643} is an apocalyptic number.

11521202522643 is a deficient number, since it is larger than the sum of its proper divisors (6882113099997).

11521202522643 is a wasteful number, since it uses less digits than its factorization.

11521202522643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1594188899 (or 1594188896 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

It can be divided in two parts, 1152120 and 2522643, that added together give a palindrome (3674763).

The spelling of 11521202522643 in words is "eleven trillion, five hundred twenty-one billion, two hundred two million, five hundred twenty-two thousand, six hundred forty-three".