13639287000 has 256 divisors, whose sum is σ = 46516654080. Its totient is φ = 3312384000.

The previous prime is 13639286993. The next prime is 13639287001. The reversal of 13639287000 is 78293631.

It is a self number, because there is not a number n which added to its sum of digits gives 13639287000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13639287001) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1576687 + ... + 1585313.

It is an arithmetic number, because the mean of its divisors is an integer number (181705680).

Almost surely, 2^13639287000 is an apocalyptic number.

13639287000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13639287000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23258327040).

13639287000 is an abundant number, since it is smaller than the sum of its proper divisors (32877367080).

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

13639287000 is a wasteful number, since it uses less digits than its factorization.

13639287000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8699 (or 8685 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The spelling of 13639287000 in words is "thirteen billion, six hundred thirty-nine million, two hundred eighty-seven thousand".