6564166016 has 16 divisors (see below), whose sum is σ = 13077049740. Its totient is φ = 3282082944.

The previous prime is 6564166013. The next prime is 6564166031. The reversal of 6564166016 is 6106614656.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6564166013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25641146 + ... + 25641401.

Almost surely, 2^6564166016 is an apocalyptic number.

It is an amenable number.

6564166016 is a deficient number, since it is larger than the sum of its proper divisors (6512883724).

6564166016 is an equidigital number, since it uses as much as digits as its factorization.

6564166016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51282561 (or 51282549 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 6564166016 is about 81019.5409515507. The cubic root of 6564166016 is about 1872.3765161768.

The spelling of 6564166016 in words is "six billion, five hundred sixty-four million, one hundred sixty-six thousand, sixteen".