13531401543 has 16 divisors (see below), whose sum is σ = 19717024896. Its totient is φ = 8186271840.

The previous prime is 13531401523. The next prime is 13531401601. The reversal of 13531401543 is 34510413531.

It is not a de Polignac number, because 13531401543 - 2⁵ = 13531401511 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13531401543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531401523) 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, 345580 + ... + 382737.

It is an arithmetic number, because the mean of its divisors is an integer number (1232314056).

Almost surely, 2^13531401543 is an apocalyptic number.

13531401543 is a deficient number, since it is larger than the sum of its proper divisors (6185623353).

13531401543 is a wasteful number, since it uses less digits than its factorization.

13531401543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728894.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 13531401543 in words is "thirteen billion, five hundred thirty-one million, four hundred one thousand, five hundred forty-three".