13531155492 has 24 divisors (see below), whose sum is σ = 31594466176. Its totient is φ = 4507275168.

The previous prime is 13531155487. The next prime is 13531155493. The reversal of 13531155492 is 29455113531.

It is a self number, because there is not a number n which added to its sum of digits gives 13531155492.

It is not an unprimeable number, because it can be changed into a prime (13531155493) 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, 370588 + ... + 405459.

Almost surely, 2^13531155492 is an apocalyptic number.

13531155492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13531155492 is an abundant number, since it is smaller than the sum of its proper divisors (18063310684).

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

13531155492 is a wasteful number, since it uses less digits than its factorization.

13531155492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 777507 (or 777505 counting only the distinct ones).

The product of its digits is 81000, while the sum is 39.

The spelling of 13531155492 in words is "thirteen billion, five hundred thirty-one million, one hundred fifty-five thousand, four hundred ninety-two".