16545198280 has 64 divisors (see below), whose sum is σ = 40148362800. Its totient is φ = 6100147200.

The previous prime is 16545198259. The next prime is 16545198283. The reversal of 16545198280 is 8289154561.

16545198280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 9155045124 + 7390153156 = 95682^2 + 85966^2 .

It is a super-2 number, since 2×16545198280² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16545198283) 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 15 ways as a sum of consecutive naturals, for example, 341826 + ... + 387214.

Almost surely, 2^16545198280 is an apocalyptic number.

16545198280 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 16545198280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20074181400).

16545198280 is an abundant number, since it is smaller than the sum of its proper divisors (23603164520).

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

16545198280 is a wasteful number, since it uses less digits than its factorization.

16545198280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46114 (or 46110 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 49.

The spelling of 16545198280 in words is "sixteen billion, five hundred forty-five million, one hundred ninety-eight thousand, two hundred eighty".