206407253679 has 16 divisors (see below), whose sum is σ = 300825633024. Its totient is φ = 124846596800.

The previous prime is 206407253653. The next prime is 206407253707. The reversal of 206407253679 is 976352704602.

It is a cyclic number.

It is not a de Polignac number, because 206407253679 - 2¹⁵ = 206407220911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206407253579) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6200862 + ... + 6234059.

It is an arithmetic number, because the mean of its divisors is an integer number (18801602064).

Almost surely, 2^206407253679 is an apocalyptic number.

206407253679 is a deficient number, since it is larger than the sum of its proper divisors (94418379345).

206407253679 is a wasteful number, since it uses less digits than its factorization.

206407253679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12435438.

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 206407253679 in words is "two hundred six billion, four hundred seven million, two hundred fifty-three thousand, six hundred seventy-nine".