13531551211542 has 96 divisors (see below), whose sum is σ = 33965212764672. Its totient is φ = 3562235966016.

The previous prime is 13531551211459. The next prime is 13531551211547. The reversal of 13531551211542 is 24511215513531.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 13531551211542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531551211547) 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, 1145598 + ... + 5326865.

It is an arithmetic number, because the mean of its divisors is an integer number (353804299632).

Almost surely, 2^{13531551211542} is an apocalyptic number.

13531551211542 is an abundant number, since it is smaller than the sum of its proper divisors (20433661553130).

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

13531551211542 is a wasteful number, since it uses less digits than its factorization.

13531551211542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6473042 (or 6473035 counting only the distinct ones).

The product of its digits is 90000, while the sum is 39.

The spelling of 13531551211542 in words is "thirteen trillion, five hundred thirty-one billion, five hundred fifty-one million, two hundred eleven thousand, five hundred forty-two".