13531960540 has 48 divisors (see below), whose sum is σ = 33139512000. Its totient is φ = 4639526976.

The previous prime is 13531960499. The next prime is 13531960669. The reversal of 13531960540 is 4506913531.

It is a happy number.

It is a super-2 number, since 2×13531960540² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 13531960540.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 979435 + ... + 993154.

It is an arithmetic number, because the mean of its divisors is an integer number (690406500).

Almost surely, 2^13531960540 is an apocalyptic number.

13531960540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531960540 is an abundant number, since it is smaller than the sum of its proper divisors (19607551460).

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

13531960540 is a wasteful number, since it uses less digits than its factorization.

13531960540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972619 (or 1972603 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 13531960540 in words is "thirteen billion, five hundred thirty-one million, nine hundred sixty thousand, five hundred forty".