16440120960 has 128 divisors (see below), whose sum is σ = 53681261760. Its totient is φ = 4277084160.

The previous prime is 16440120953. The next prime is 16440120979. The reversal of 16440120960 is 6902104461.

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

It is a super-3 number, since 3×16440120960³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25702 + ... + 183141.

Almost surely, 2^16440120960 is an apocalyptic number.

16440120960 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 16440120960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26840630880).

16440120960 is an abundant number, since it is smaller than the sum of its proper divisors (37241140800).

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

16440120960 is a wasteful number, since it uses less digits than its factorization.

16440120960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208906 (or 208894 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The spelling of 16440120960 in words is "sixteen billion, four hundred forty million, one hundred twenty thousand, nine hundred sixty".