13540534672 has 40 divisors (see below), whose sum is σ = 30012231872. Its totient is φ = 5797353600.

The previous prime is 13540534669. The next prime is 13540534687. The reversal of 13540534672 is 27643504531.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55147 + ... + 173557.

Almost surely, 2^13540534672 is an apocalyptic number.

It is an amenable number.

13540534672 is an abundant number, since it is smaller than the sum of its proper divisors (16471697200).

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

13540534672 is a wasteful number, since it uses less digits than its factorization.

13540534672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119447 (or 119441 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 40.

The spelling of 13540534672 in words is "thirteen billion, five hundred forty million, five hundred thirty-four thousand, six hundred seventy-two".