16387531544080 has 20 divisors (see below), whose sum is σ = 38101010840172. Its totient is φ = 6555012617600.

The previous prime is 16387531544051. The next prime is 16387531544081. The reversal of 16387531544080 is 8044513578361.

It can be written as a sum of positive squares in 2 ways, for example, as 6580086868224 + 9807444675856 = 2565168^2 + 3131684^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (16387531544081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 102422072071 + ... + 102422072230.

Almost surely, 2^{16387531544080} is an apocalyptic number.

16387531544080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16387531544080 is an abundant number, since it is smaller than the sum of its proper divisors (21713479296092).

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

16387531544080 is a wasteful number, since it uses less digits than its factorization.

16387531544080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204844144314 (or 204844144308 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 55.

The spelling of 16387531544080 in words is "sixteen trillion, three hundred eighty-seven billion, five hundred thirty-one million, five hundred forty-four thousand, eighty".