13987559880 has 384 divisors, whose sum is σ = 55719705600. Its totient is φ = 2970279936.

The previous prime is 13987559851. The next prime is 13987559903. The reversal of 13987559880 is 8895578931.

13987559880 is a `hidden beast` number, since 1 + 39 + 8 + 7 + 5 + 598 + 8 + 0 = 666.

It is a super-2 number, since 2×13987559880² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a zygodrome in base 3.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3382294 + ... + 3386426.

It is an arithmetic number, because the mean of its divisors is an integer number (145103400).

Almost surely, 2^13987559880 is an apocalyptic number.

13987559880 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 13987559880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27859852800).

13987559880 is an abundant number, since it is smaller than the sum of its proper divisors (41732145720).

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

13987559880 is a wasteful number, since it uses less digits than its factorization.

13987559880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4253 (or 4246 counting only the distinct ones).

The product of its (nonzero) digits is 21772800, while the sum is 63.

The spelling of 13987559880 in words is "thirteen billion, nine hundred eighty-seven million, five hundred fifty-nine thousand, eight hundred eighty".