206206023641 has 4 divisors (see below), whose sum is σ = 206280928692. Its totient is φ = 206131118592.

The previous prime is 206206023613. The next prime is 206206023659. The reversal of 206206023641 is 146320602602.

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 121501742041 + 84704281600 = 348571^2 + 291040^2 .

It is a cyclic number.

It is not a de Polignac number, because 206206023641 - 2¹⁴ = 206206007257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206206023598 and 206206023607.

It is not an unprimeable number, because it can be changed into a prime (206206023671) 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, 37448396 + ... + 37453901.

It is an arithmetic number, because the mean of its divisors is an integer number (51570232173).

Almost surely, 2^206206023641 is an apocalyptic number.

It is an amenable number.

206206023641 is a deficient number, since it is larger than the sum of its proper divisors (74905051).

206206023641 is an equidigital number, since it uses as much as digits as its factorization.

206206023641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74905050.

The product of its (nonzero) digits is 20736, while the sum is 32.

The spelling of 206206023641 in words is "two hundred six billion, two hundred six million, twenty-three thousand, six hundred forty-one".