13531211424551 has 4 divisors (see below), whose sum is σ = 13591889502912. Its totient is φ = 13470533346192.

The previous prime is 13531211424509. The next prime is 13531211424677. The reversal of 13531211424551 is 15542411213531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13531211424551 - 2⁶ = 13531211424487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531211424851) 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, 30339038846 + ... + 30339039291.

It is an arithmetic number, because the mean of its divisors is an integer number (3397972375728).

Almost surely, 2^{13531211424551} is an apocalyptic number.

13531211424551 is a deficient number, since it is larger than the sum of its proper divisors (60678078361).

13531211424551 is an equidigital number, since it uses as much as digits as its factorization.

13531211424551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60678078360.

The product of its digits is 72000, while the sum is 38.

The spelling of 13531211424551 in words is "thirteen trillion, five hundred thirty-one billion, two hundred eleven million, four hundred twenty-four thousand, five hundred fifty-one".