16661006601 has 8 divisors (see below), whose sum is σ = 22980698880. Its totient is φ = 10724326032.

The previous prime is 16661006597. The next prime is 16661006617. The reversal of 16661006601 is 10660016661.

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

It is not a de Polignac number, because 16661006601 - 2² = 16661006597 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16661006651) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95752825 + ... + 95752998.

It is an arithmetic number, because the mean of its divisors is an integer number (2872587360).

Almost surely, 2^16661006601 is an apocalyptic number.

It is an amenable number.

16661006601 is a deficient number, since it is larger than the sum of its proper divisors (6319692279).

16661006601 is a wasteful number, since it uses less digits than its factorization.

16661006601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191505855.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 16661006601 in words is "sixteen billion, six hundred sixty-one million, six thousand, six hundred one".