11512535063421 has 16 divisors (see below), whose sum is σ = 17551389571200. Its totient is φ = 6575411840448.

The previous prime is 11512535063417. The next prime is 11512535063423. The reversal of 11512535063421 is 12436053521511.

11512535063421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11512535063421 - 2² = 11512535063417 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11512535063421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11512535063423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 132439866 + ... + 132526763.

It is an arithmetic number, because the mean of its divisors is an integer number (1096961848200).

Almost surely, 2^{11512535063421} is an apocalyptic number.

It is an amenable number.

11512535063421 is a deficient number, since it is larger than the sum of its proper divisors (6038854507779).

11512535063421 is a wasteful number, since it uses less digits than its factorization.

11512535063421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264968708.

The product of its (nonzero) digits is 108000, while the sum is 39.

Adding to 11512535063421 its reverse (12436053521511), we get a palindrome (23948588584932).

The spelling of 11512535063421 in words is "eleven trillion, five hundred twelve billion, five hundred thirty-five million, sixty-three thousand, four hundred twenty-one".