13531113405541 has 4 divisors (see below), whose sum is σ = 13967600934784. Its totient is φ = 13094625876300.

The previous prime is 13531113405517. The next prime is 13531113405547. The reversal of 13531113405541 is 14550431113531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13531113405541 is a prime.

It is a super-2 number, since 2×13531113405541² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13531113405541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531113405547) 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 3 ways as a sum of consecutive naturals, for example, 218243764575 + ... + 218243764636.

It is an arithmetic number, because the mean of its divisors is an integer number (3491900233696).

Almost surely, 2^{13531113405541} is an apocalyptic number.

It is an amenable number.

13531113405541 is a deficient number, since it is larger than the sum of its proper divisors (436487529243).

13531113405541 is an equidigital number, since it uses as much as digits as its factorization.

13531113405541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436487529242.

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 13531113405541 in words is "thirteen trillion, five hundred thirty-one billion, one hundred thirteen million, four hundred five thousand, five hundred forty-one".