206796628849 has 8 divisors (see below), whose sum is σ = 212846451048. Its totient is φ = 200771055360.

The previous prime is 206796628823. The next prime is 206796628891. The reversal of 206796628849 is 948826697602.

It can be written as a sum of positive squares in 4 ways, for example, as 21259681249 + 185536947600 = 145807^2 + 430740^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206796628849 is a prime.

It is a super-2 number, since 2×206796628849² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206796626849) 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, 6044872 + ... + 6078985.

It is an arithmetic number, because the mean of its divisors is an integer number (26605806381).

Almost surely, 2^206796628849 is an apocalyptic number.

It is an amenable number.

206796628849 is a deficient number, since it is larger than the sum of its proper divisors (6049822199).

206796628849 is a wasteful number, since it uses less digits than its factorization.

206796628849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12124355.

The product of its (nonzero) digits is 125411328, while the sum is 67.

The spelling of 206796628849 in words is "two hundred six billion, seven hundred ninety-six million, six hundred twenty-eight thousand, eight hundred forty-nine".