16355532800 has 84 divisors (see below), whose sum is σ = 40559753526. Its totient is φ = 6542131200.

The previous prime is 16355532797. The next prime is 16355532811. The reversal of 16355532800 is 823555361.

It can be written as a sum of positive squares in 3 ways, for example, as 15368065024 + 987467776 = 123968^2 + 31424^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 164870 + ... + 244730.

Almost surely, 2^16355532800 is an apocalyptic number.

16355532800 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 16355532800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20279876763).

16355532800 is an abundant number, since it is smaller than the sum of its proper divisors (24204220726).

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

16355532800 is an frugal number, since it uses more digits than its factorization.

16355532800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79897 (or 79868 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 38.

The spelling of 16355532800 in words is "sixteen billion, three hundred fifty-five million, five hundred thirty-two thousand, eight hundred".