16200000000 has 450 divisors, whose sum is σ = 60440887023. Its totient is φ = 4320000000.

The previous prime is 16199999999. The next prime is 16200000071. The reversal of 16200000000 is 261.

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 5 ways, for example, as 15443529984 + 756470016 = 124272^2 + 27504^2 .

It is a tau number, because it is divible by the number of its divisors (450).

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=90000.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3239999998 + ... + 3240000002.

Almost surely, 2^16200000000 is an apocalyptic number.

16200000000 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 16200000000

16200000000 is an abundant number, since it is smaller than the sum of its proper divisors (44240887023).

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

16200000000 is an frugal number, since it uses more digits than its factorization.

16200000000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 16200000000 its reverse (261), we get a palindrome (16200000261).

The spelling of 16200000000 in words is "sixteen billion, two hundred million", and thus it is an aban number.