16562000000 has 504 divisors, whose sum is σ = 51950604555. Its totient is φ = 5241600000.

The previous prime is 16561999997. The next prime is 16562000033. The reversal of 16562000000 is 26561.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 11 ways, for example, as 16546191424 + 15808576 = 128632^2 + 3976^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=91000.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 62 ways as a sum of consecutive naturals, for example, 1273999994 + ... + 1274000006.

Almost surely, 2^16562000000 is an apocalyptic number.

16562000000 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 16562000000

16562000000 is an abundant number, since it is smaller than the sum of its proper divisors (35388604555).

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

16562000000 is an frugal number, since it uses more digits than its factorization.

16562000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84 (or 27 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 16562000000 its reverse (26561), we get a palindrome (16562026561).

The spelling of 16562000000 in words is "sixteen billion, five hundred sixty-two million", and thus it is an aban number.