16444519560 has 672 divisors, whose sum is σ = 68428926360. Its totient is φ = 3532419072.

The previous prime is 16444519537. The next prime is 16444519601. The reversal of 16444519560 is 6591544461.

16444519560 is a `hidden beast` number, since 1 + 6 + 44 + 45 + 1 + 9 + 560 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16420372164 + 24147396 = 128142^2 + 4914^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

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 167 ways as a sum of consecutive naturals, for example, 24289942 + ... + 24290618.

Almost surely, 2^16444519560 is an apocalyptic number.

16444519560 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 16444519560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34214463180).

16444519560 is an abundant number, since it is smaller than the sum of its proper divisors (51984406800).

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

16444519560 is a wasteful number, since it uses less digits than its factorization.

16444519560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737 (or 711 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 45.

The spelling of 16444519560 in words is "sixteen billion, four hundred forty-four million, five hundred nineteen thousand, five hundred sixty".