206436125061 has 12 divisors (see below), whose sum is σ = 298521698592. Its totient is φ = 137468921256.

The previous prime is 206436125033. The next prime is 206436125099. The reversal of 206436125061 is 160521634602.

206436125061 is a `hidden beast` number, since 2 + 0 + 643 + 6 + 1 + 2 + 5 + 0 + 6 + 1 = 666.

It is not a de Polignac number, because 206436125061 - 2⁶ = 206436124997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206436125761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12921751 + ... + 12937716.

It is an arithmetic number, because the mean of its divisors is an integer number (24876808216).

Almost surely, 2^206436125061 is an apocalyptic number.

It is an amenable number.

206436125061 is a deficient number, since it is larger than the sum of its proper divisors (92085573531).

206436125061 is a wasteful number, since it uses less digits than its factorization.

206436125061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25860360 (or 25860357 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 206436125061 its reverse (160521634602), we get a palindrome (366957759663).

The spelling of 206436125061 in words is "two hundred six billion, four hundred thirty-six million, one hundred twenty-five thousand, sixty-one".