13887565280 has 48 divisors (see below), whose sum is σ = 32990709024. Its totient is φ = 5524323840.

The previous prime is 13887565271. The next prime is 13887565297. The reversal of 13887565280 is 8256578831.

It is a super-2 number, since 2×13887565280² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210812 + ... + 268731.

It is an arithmetic number, because the mean of its divisors is an integer number (687306438).

Almost surely, 2^13887565280 is an apocalyptic number.

13887565280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

13887565280 is an abundant number, since it is smaller than the sum of its proper divisors (19103143744).

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

13887565280 is a wasteful number, since it uses less digits than its factorization.

13887565280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 479739 (or 479731 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 13887565280 in words is "thirteen billion, eight hundred eighty-seven million, five hundred sixty-five thousand, two hundred eighty".