16445461566 has 8 divisors (see below), whose sum is σ = 32890923144. Its totient is φ = 5481820520.

The previous prime is 16445461559. The next prime is 16445461601. The reversal of 16445461566 is 66516454461.

It is a sphenic number, since it is the product of 3 distinct primes.

16445461566 is an admirable number.

It is a super-2 number, since 2×16445461566² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1370455125 + ... + 1370455136.

It is an arithmetic number, because the mean of its divisors is an integer number (4111365393).

Almost surely, 2^16445461566 is an apocalyptic number.

16445461566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

16445461566 is a wasteful number, since it uses less digits than its factorization.

16445461566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2740910266.

The product of its digits is 2073600, while the sum is 48.

The spelling of 16445461566 in words is "sixteen billion, four hundred forty-five million, four hundred sixty-one thousand, five hundred sixty-six".