206534444399 has 4 divisors (see below), whose sum is σ = 206551755480. Its totient is φ = 206517133320.

The previous prime is 206534444383. The next prime is 206534444477. The reversal of 206534444399 is 993444435602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206534444399 - 2⁴ = 206534444383 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 206534444399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206534444329) 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, 8637632 + ... + 8661509.

It is an arithmetic number, because the mean of its divisors is an integer number (51637938870).

Almost surely, 2^206534444399 is an apocalyptic number.

206534444399 is a deficient number, since it is larger than the sum of its proper divisors (17311081).

206534444399 is a wasteful number, since it uses less digits than its factorization.

206534444399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17311080.

The product of its (nonzero) digits is 11197440, while the sum is 53.

The spelling of 206534444399 in words is "two hundred six billion, five hundred thirty-four million, four hundred forty-four thousand, three hundred ninety-nine".