16143227136 has 81 divisors (see below), whose sum is σ = 46562494251. Its totient is φ = 5379042816.

The previous prime is 16143227101. The next prime is 16143227159. The reversal of 16143227136 is 63172234161.

The square root of 16143227136 is 127056.

It is a perfect power (a square), and thus also a powerful number.

16143227136 is a `hidden beast` number, since 1 + 614 + 3 + 2 + 2 + 7 + 1 + 36 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 16143227136.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 6097365 + ... + 6100011.

Almost surely, 2^16143227136 is an apocalyptic number.

16143227136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

16143227136 is the 127056-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16143227136

16143227136 is an abundant number, since it is smaller than the sum of its proper divisors (30419267115).

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

16143227136 is an frugal number, since it uses more digits than its factorization.

16143227136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316 (or 2652 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

Multiplying 16143227136 by its sum of digits (36), we get a square (581156176896 = 762336²).

16143227136 divided by its sum of digits (36) gives a square (448422976 = 21176²).

The spelling of 16143227136 in words is "sixteen billion, one hundred forty-three million, two hundred twenty-seven thousand, one hundred thirty-six".