16565195670672 has 160 divisors (see below), whose sum is σ = 47144553984000. Its totient is φ = 4970269278720.

The previous prime is 16565195670643. The next prime is 16565195670707. The reversal of 16565195670672 is 27607659156561.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 83869729 + ... + 84067007.

It is an arithmetic number, because the mean of its divisors is an integer number (294653462400).

Almost surely, 2^{16565195670672} is an apocalyptic number.

16565195670672 is a gapful number since it is divisible by the number (12) 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 16565195670672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23572276992000).

16565195670672 is an abundant number, since it is smaller than the sum of its proper divisors (30579358313328).

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

16565195670672 is a wasteful number, since it uses less digits than its factorization.

16565195670672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198869 (or 198863 counting only the distinct ones).

The product of its (nonzero) digits is 142884000, while the sum is 66.

The spelling of 16565195670672 in words is "sixteen trillion, five hundred sixty-five billion, one hundred ninety-five million, six hundred seventy thousand, six hundred seventy-two".