206744424653 has 16 divisors (see below), whose sum is σ = 227051596800. Its totient is φ = 187072801344.

The previous prime is 206744424617. The next prime is 206744424683. The reversal of 206744424653 is 356424447602.

It is not a de Polignac number, because 206744424653 - 2¹⁰ = 206744423629 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 206744424598 and 206744424607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206744424683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 640148 + ... + 907346.

It is an arithmetic number, because the mean of its divisors is an integer number (14190724800).

Almost surely, 2^206744424653 is an apocalyptic number.

It is an amenable number.

206744424653 is a deficient number, since it is larger than the sum of its proper divisors (20307172147).

206744424653 is a wasteful number, since it uses less digits than its factorization.

206744424653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268388.

The product of its (nonzero) digits is 3870720, while the sum is 47.

The spelling of 206744424653 in words is "two hundred six billion, seven hundred forty-four million, four hundred twenty-four thousand, six hundred fifty-three".