13531155539 has 8 divisors (see below), whose sum is σ = 15538169280. Its totient is φ = 11653626600.

The previous prime is 13531155529. The next prime is 13531155551. The reversal of 13531155539 is 93555113531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-13531155539 is a prime.

It is a super-2 number, since 2×13531155539² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13531155496 and 13531155505.

It is not an unprimeable number, because it can be changed into a prime (13531155509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32370977 + ... + 32371394.

It is an arithmetic number, because the mean of its divisors is an integer number (1942271160).

Almost surely, 2^13531155539 is an apocalyptic number.

13531155539 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

13531155539 is a deficient number, since it is larger than the sum of its proper divisors (2007013741).

13531155539 is a wasteful number, since it uses less digits than its factorization.

13531155539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64742401.

The product of its digits is 151875, while the sum is 41.

The spelling of 13531155539 in words is "thirteen billion, five hundred thirty-one million, one hundred fifty-five thousand, five hundred thirty-nine".