16382531481156 has 45 divisors (see below), whose sum is σ = 42827363807151. Its totient is φ = 5460819541848.

The previous prime is 16382531481079. The next prime is 16382531481161. The reversal of 16382531481156 is 65118413528361.

The square root of 16382531481156 is 4047534.

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

16382531481156 is a `hidden beast` number, since 1 + 6 + 3 + 8 + 2 + 5 + 3 + 1 + 481 + 156 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 72743181 + ... + 72968043.

Almost surely, 2^{16382531481156} is an apocalyptic number.

16382531481156 is the 4047534-th square number.

It is an amenable number.

16382531481156 is an abundant number, since it is smaller than the sum of its proper divisors (26444832325995).

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

16382531481156 is an frugal number, since it uses more digits than its factorization.

16382531481156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449742 (or 224868 counting only the distinct ones).

The product of its digits is 4147200, while the sum is 54.

The spelling of 16382531481156 in words is "sixteen trillion, three hundred eighty-two billion, five hundred thirty-one million, four hundred eighty-one thousand, one hundred fifty-six".