16161528384 has 63 divisors (see below), whose sum is σ = 46332850057. Its totient is φ = 5386159104.

The previous prime is 16161528353. The next prime is 16161528389. The reversal of 16161528384 is 48382516161.

The square root of 16161528384 is 127128.

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

16161528384 is a `hidden beast` number, since 1 + 6 + 1 + 615 + 28 + 3 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13188225600 + 2973302784 = 114840^2 + 54528^2 .

It is a super-2 number, since 2×16161528384² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16161528389) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3048424 + ... + 3053720.

Almost surely, 2^16161528384 is an apocalyptic number.

16161528384 is the 127128-th square number.

It is an amenable number.

16161528384 is an abundant number, since it is smaller than the sum of its proper divisors (30171321673).

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

16161528384 is an frugal number, since it uses more digits than its factorization.

16161528384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10612 (or 5302 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The spelling of 16161528384 in words is "sixteen billion, one hundred sixty-one million, five hundred twenty-eight thousand, three hundred eighty-four".