13531455140 has 48 divisors (see below), whose sum is σ = 32866791552. Its totient is φ = 4583456256.

The previous prime is 13531455121. The next prime is 13531455163. The reversal of 13531455140 is 4155413531.

It is a junction number, because it is equal to n+sod(n) for n = 13531455097 and 13531455106.

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, 570629 + ... + 593868.

It is an arithmetic number, because the mean of its divisors is an integer number (684724824).

Almost surely, 2^13531455140 is an apocalyptic number.

13531455140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13531455140 is an abundant number, since it is smaller than the sum of its proper divisors (19335336412).

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

13531455140 is a wasteful number, since it uses less digits than its factorization.

13531455140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1164596 (or 1164594 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 32.

Adding to 13531455140 its reverse (4155413531), we get a palindrome (17686868671).

The spelling of 13531455140 in words is "thirteen billion, five hundred thirty-one million, four hundred fifty-five thousand, one hundred forty".