16447549504 has 189 divisors, whose sum is σ = 37149459991. Its totient is φ = 7222927360.

The previous prime is 16447549483. The next prime is 16447549523. The reversal of 16447549504 is 40594574461.

The square root of 16447549504 is 128248.

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

It can be written as a sum of positive squares in 4 ways, for example, as 1158721600 + 15288827904 = 34040^2 + 123648^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 401159724 + ... + 401159764.

Almost surely, 2^16447549504 is an apocalyptic number.

16447549504 is the 128248-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16447549504

16447549504 is an abundant number, since it is smaller than the sum of its proper divisors (20701910487).

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

16447549504 is an equidigital number, since it uses as much as digits as its factorization.

16447549504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 49.

Multiplying 16447549504 by its sum of digits (49), we get a square (805929925696 = 897736²).

The spelling of 16447549504 in words is "sixteen billion, four hundred forty-seven million, five hundred forty-nine thousand, five hundred four".