13531513040 has 40 divisors (see below), whose sum is σ = 31485603840. Its totient is φ = 5408332416.

The previous prime is 13531513031. The next prime is 13531513049. The reversal of 13531513040 is 4031513531.

It is an interprime number because it is at equal distance from previous prime (13531513031) and next prime (13531513049).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13531513049) 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, 36197 + ... + 168443.

It is an arithmetic number, because the mean of its divisors is an integer number (787140096).

Almost surely, 2^13531513040 is an apocalyptic number.

13531513040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531513040 is an abundant number, since it is smaller than the sum of its proper divisors (17954090800).

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

13531513040 is a wasteful number, since it uses less digits than its factorization.

13531513040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133539 (or 133533 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 26.

The spelling of 13531513040 in words is "thirteen billion, five hundred thirty-one million, five hundred thirteen thousand, forty".