13139438532 has 48 divisors (see below), whose sum is σ = 34012742400. Its totient is φ = 3914160160.

The previous prime is 13139438531. The next prime is 13139438539. The reversal of 13139438532 is 23583493131.

It is not an unprimeable number, because it can be changed into a prime (13139438531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835782 + ... + 851357.

It is an arithmetic number, because the mean of its divisors is an integer number (708598800).

Almost surely, 2^13139438532 is an apocalyptic number.

13139438532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13139438532 is an abundant number, since it is smaller than the sum of its proper divisors (20873303868).

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

13139438532 is a wasteful number, since it uses less digits than its factorization.

13139438532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1687216 (or 1687214 counting only the distinct ones).

The product of its digits is 233280, while the sum is 42.

The spelling of 13139438532 in words is "thirteen billion, one hundred thirty-nine million, four hundred thirty-eight thousand, five hundred thirty-two".