13531054520 has 32 divisors (see below), whose sum is σ = 31187434320. Its totient is φ = 5280410880.

The previous prime is 13531054517. The next prime is 13531054529. The reversal of 13531054520 is 2545013531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531054529) 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, 4123682 + ... + 4126961.

Almost surely, 2^13531054520 is an apocalyptic number.

13531054520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531054520 is an abundant number, since it is smaller than the sum of its proper divisors (17656379800).

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

13531054520 is a wasteful number, since it uses less digits than its factorization.

13531054520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8250695 (or 8250691 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 29.

The spelling of 13531054520 in words is "thirteen billion, five hundred thirty-one million, fifty-four thousand, five hundred twenty".