206706205601 has 16 divisors (see below), whose sum is σ = 249736406400. Its totient is φ = 167131237248.

The previous prime is 206706205523. The next prime is 206706205603. The reversal of 206706205601 is 106502607602.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206706205601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206706205603) 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, 3304166 + ... + 3366143.

It is an arithmetic number, because the mean of its divisors is an integer number (15608525400).

Almost surely, 2^206706205601 is an apocalyptic number.

It is an amenable number.

206706205601 is a deficient number, since it is larger than the sum of its proper divisors (43030200799).

206706205601 is a wasteful number, since it uses less digits than its factorization.

206706205601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6670568.

The product of its (nonzero) digits is 30240, while the sum is 35.

The spelling of 206706205601 in words is "two hundred six billion, seven hundred six million, two hundred five thousand, six hundred one".