16005516661120 has 64 divisors (see below), whose sum is σ = 43729358032800. Its totient is φ = 5487605710848.

The previous prime is 16005516661111. The next prime is 16005516661129. The reversal of 16005516661120 is 2116661550061.

It is an interprime number because it is at equal distance from previous prime (16005516661111) and next prime (16005516661129).

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16005516661129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1786325505 + ... + 1786334464.

Almost surely, 2^{16005516661120} is an apocalyptic number.

16005516661120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16005516661120 is an abundant number, since it is smaller than the sum of its proper divisors (27723841371680).

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

16005516661120 is an equidigital number, since it uses as much as digits as its factorization.

16005516661120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3572659995 (or 3572659983 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 40.

The spelling of 16005516661120 in words is "sixteen trillion, five billion, five hundred sixteen million, six hundred sixty-one thousand, one hundred twenty".