206102143263601 has 4 divisors (see below), whose sum is σ = 221956154283892. Its totient is φ = 190248132243312.

The previous prime is 206102143263539. The next prime is 206102143263617. The reversal of 206102143263601 is 106362341201602.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73798064736400 + 132304078527201 = 8590580^2 + 11502351^2 .

It is not a de Polignac number, because 206102143263601 - 2⁴³ = 197306050241393 is a prime.

It is a super-2 number, since 2×206102143263601² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206102143263001) 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, 7927005510126 + ... + 7927005510151.

It is an arithmetic number, because the mean of its divisors is an integer number (55489038570973).

Almost surely, 2^{206102143263601} is an apocalyptic number.

It is an amenable number.

206102143263601 is a deficient number, since it is larger than the sum of its proper divisors (15854011020291).

206102143263601 is a wasteful number, since it uses less digits than its factorization.

206102143263601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15854011020290.

The product of its (nonzero) digits is 62208, while the sum is 37.

The spelling of 206102143263601 in words is "two hundred six trillion, one hundred two billion, one hundred forty-three million, two hundred sixty-three thousand, six hundred one".