13439655504 has 360 divisors, whose sum is σ = 44008412448. Its totient is φ = 3794757120.

The previous prime is 13439655503. The next prime is 13439655511. The reversal of 13439655504 is 40555693431.

13439655504 is a `hidden beast` number, since 1 + 3 + 4 + 3 + 96 + 5 + 550 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 13439655504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13439655503) by changing a digit.

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 71 ways as a sum of consecutive naturals, for example, 36031062 + ... + 36031434.

Almost surely, 2^13439655504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13439655504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22004206224).

13439655504 is an abundant number, since it is smaller than the sum of its proper divisors (30568756944).

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

13439655504 is a wasteful number, since it uses less digits than its factorization.

13439655504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

The spelling of 13439655504 in words is "thirteen billion, four hundred thirty-nine million, six hundred fifty-five thousand, five hundred four".