13987285440 has 56 divisors (see below), whose sum is σ = 44409634320. Its totient is φ = 3729942528.

The previous prime is 13987285439. The next prime is 13987285457. The reversal of 13987285440 is 4458278931.

It is a happy number.

It is a congruent 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, 7284085 + ... + 7286004.

Almost surely, 2^13987285440 is an apocalyptic number.

13987285440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13987285440 is an abundant number, since it is smaller than the sum of its proper divisors (30422348880).

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

13987285440 is a wasteful number, since it uses less digits than its factorization.

13987285440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14570109 (or 14570099 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 13987285440 in words is "thirteen billion, nine hundred eighty-seven million, two hundred eighty-five thousand, four hundred forty".