16446447360 has 1440 divisors, whose sum is σ = 75218153472. Its totient is φ = 3344302080.

The previous prime is 16446447323. The next prime is 16446447373. The reversal of 16446447360 is 6374464461.

16446447360 is a `hidden beast` number, since 1 + 64 + 4 + 64 + 473 + 60 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 382475499 + ... + 382475541.

Almost surely, 2^16446447360 is an apocalyptic number.

16446447360 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 16446447360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37609076736).

16446447360 is an abundant number, since it is smaller than the sum of its proper divisors (58771706112).

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

16446447360 is a wasteful number, since it uses less digits than its factorization.

16446447360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 45.

The spelling of 16446447360 in words is "sixteen billion, four hundred forty-six million, four hundred forty-seven thousand, three hundred sixty".