206544552601 has 4 divisors (see below), whose sum is σ = 206575428304. Its totient is φ = 206513676900.

The previous prime is 206544552589. The next prime is 206544552607. The reversal of 206544552601 is 106255445602.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 106255445602 = 2 ⋅53127722801.

It is a cyclic number.

It is not a de Polignac number, because 206544552601 - 2⁹ = 206544552089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206544552607) 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, 15427815 + ... + 15441196.

It is an arithmetic number, because the mean of its divisors is an integer number (51643857076).

Almost surely, 2^206544552601 is an apocalyptic number.

It is an amenable number.

206544552601 is a deficient number, since it is larger than the sum of its proper divisors (30875703).

206544552601 is an equidigital number, since it uses as much as digits as its factorization.

206544552601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30875702.

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 206544552601 in words is "two hundred six billion, five hundred forty-four million, five hundred fifty-two thousand, six hundred one".