206636442545401 has 8 divisors (see below), whose sum is σ = 227954400357600. Its totient is φ = 185740622511840.

The previous prime is 206636442545383. The next prime is 206636442545413. The reversal of 206636442545401 is 104545244636602.

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

It is not a de Polignac number, because 206636442545401 - 2⁵ = 206636442545369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206636442545431) 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, 105534443631 + ... + 105534445588.

It is an arithmetic number, because the mean of its divisors is an integer number (28494300044700).

Almost surely, 2^{206636442545401} is an apocalyptic number.

It is an amenable number.

206636442545401 is a deficient number, since it is larger than the sum of its proper divisors (21317957812199).

206636442545401 is a wasteful number, since it uses less digits than its factorization.

206636442545401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211068889319.

The product of its (nonzero) digits is 16588800, while the sum is 52.

The spelling of 206636442545401 in words is "two hundred six trillion, six hundred thirty-six billion, four hundred forty-two million, five hundred forty-five thousand, four hundred one".