6601804716667 has 4 divisors (see below), whose sum is σ = 6601871431360. Its totient is φ = 6601738001976.

The previous prime is 6601804716659. The next prime is 6601804716671. The reversal of 6601804716667 is 7666174081066.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6601804716667 - 2³ = 6601804716659 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6601804716677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33208692 + ... + 33406897.

It is an arithmetic number, because the mean of its divisors is an integer number (1650467857840).

Almost surely, 2^{6601804716667} is an apocalyptic number.

6601804716667 is a deficient number, since it is larger than the sum of its proper divisors (66714693).

6601804716667 is an equidigital number, since it uses as much as digits as its factorization.

6601804716667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66714692.

The product of its (nonzero) digits is 12192768, while the sum is 58.

The spelling of 6601804716667 in words is "six trillion, six hundred one billion, eight hundred four million, seven hundred sixteen thousand, six hundred sixty-seven".