206601604001 has 16 divisors (see below), whose sum is σ = 233436392448. Its totient is φ = 181531713600.

The previous prime is 206601603997. The next prime is 206601604019. The reversal of 206601604001 is 100406106602.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 206601604001 - 2² = 206601603997 is a prime.

It is not an unprimeable number, because it can be changed into a prime (206601604021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4177541 + ... + 4226706.

It is an arithmetic number, because the mean of its divisors is an integer number (14589774528).

Almost surely, 2^206601604001 is an apocalyptic number.

It is an amenable number.

206601604001 is a deficient number, since it is larger than the sum of its proper divisors (26834788447).

206601604001 is a wasteful number, since it uses less digits than its factorization.

206601604001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8404352.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 206601604001 in words is "two hundred six billion, six hundred one million, six hundred four thousand, one".