16439980955200 has 252 divisors, whose sum is σ = 45666221061076. Its totient is φ = 5816600064000.

The previous prime is 16439980955191. The next prime is 16439980955201. The reversal of 16439980955200 is 255908993461.

It can be written as a sum of positive squares in 6 ways, for example, as 1171018322496 + 15268962632704 = 1082136^2 + 3907552^2 .

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (16439980955201) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6015670 + ... + 8310730.

Almost surely, 2^{16439980955200} is an apocalyptic number.

16439980955200 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 16439980955200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22833110530538).

16439980955200 is an abundant number, since it is smaller than the sum of its proper divisors (29226240105876).

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

16439980955200 is a wasteful number, since it uses less digits than its factorization.

16439980955200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2295142 (or 2295116 counting only the distinct ones).

The product of its (nonzero) digits is 20995200, while the sum is 61.

The spelling of 16439980955200 in words is "sixteen trillion, four hundred thirty-nine billion, nine hundred eighty million, nine hundred fifty-five thousand, two hundred".