16385887120 has 40 divisors (see below), whose sum is σ = 38371294080. Its totient is φ = 6507196800.

The previous prime is 16385887117. The next prime is 16385887123. The reversal of 16385887120 is 2178858361.

It is an interprime number because it is at equal distance from previous prime (16385887117) and next prime (16385887123).

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (16385887123) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 725656 + ... + 747895.

It is an arithmetic number, because the mean of its divisors is an integer number (959282352).

Almost surely, 2^16385887120 is an apocalyptic number.

16385887120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16385887120 is an abundant number, since it is smaller than the sum of its proper divisors (21985406960).

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

16385887120 is a wasteful number, since it uses less digits than its factorization.

16385887120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473703 (or 1473697 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 49.

The spelling of 16385887120 in words is "sixteen billion, three hundred eighty-five million, eight hundred eighty-seven thousand, one hundred twenty".