16605707698944 has 1080 divisors, whose sum is σ = 65679765072768. Its totient is φ = 4121852313600.

The previous prime is 16605707698919. The next prime is 16605707698949. The reversal of 16605707698944 is 44989670750661.

It is a happy number.

16605707698944 is a `hidden beast` number, since 1 + 6 + 6 + 0 + 570 + 7 + 6 + 9 + 8 + 9 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is not an unprimeable number, because it can be changed into a prime (16605707698949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 224513169 + ... + 224587119.

Almost surely, 2^{16605707698944} is an apocalyptic number.

16605707698944 is a gapful number since it is divisible by the number (14) 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 16605707698944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32839882536384).

16605707698944 is an abundant number, since it is smaller than the sum of its proper divisors (49074057373824).

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

16605707698944 is a wasteful number, since it uses less digits than its factorization.

16605707698944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74023 (or 73993 counting only the distinct ones).

The product of its (nonzero) digits is 548674560, while the sum is 72.

The spelling of 16605707698944 in words is "sixteen trillion, six hundred five billion, seven hundred seven million, six hundred ninety-eight thousand, nine hundred forty-four".