16144014666880 has 128 divisors (see below), whose sum is σ = 38650944150000. Its totient is φ = 6448132521984.

The previous prime is 16144014666827. The next prime is 16144014666881. The reversal of 16144014666880 is 8866641044161.

It can be written as a sum of positive squares in 8 ways, for example, as 14136216353856 + 2007798313024 = 3759816^2 + 1416968^2 .

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (16144014666881) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 1622672146 + ... + 1622682094.

Almost surely, 2^{16144014666880} is an apocalyptic number.

16144014666880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16144014666880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19325472075000).

16144014666880 is an abundant number, since it is smaller than the sum of its proper divisors (22506929483120).

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

16144014666880 is a wasteful number, since it uses less digits than its factorization.

16144014666880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13434 (or 13422 counting only the distinct ones).

The product of its (nonzero) digits is 5308416, while the sum is 55.

The spelling of 16144014666880 in words is "sixteen trillion, one hundred forty-four billion, fourteen million, six hundred sixty-six thousand, eight hundred eighty".