13887434550 has 48 divisors (see below), whose sum is σ = 37571827392. Its totient is φ = 3366650400.

The previous prime is 13887434531. The next prime is 13887434593. The reversal of 13887434550 is 5543478831.

It is a self number, because there is not a number n which added to its sum of digits gives 13887434550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4206664 + ... + 4209963.

It is an arithmetic number, because the mean of its divisors is an integer number (782746404).

Almost surely, 2^13887434550 is an apocalyptic number.

13887434550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13887434550 is an abundant number, since it is smaller than the sum of its proper divisors (23684392842).

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

13887434550 is a wasteful number, since it uses less digits than its factorization.

13887434550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8416653 (or 8416648 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 13887434550 in words is "thirteen billion, eight hundred eighty-seven million, four hundred thirty-four thousand, five hundred fifty".