206258506493 has 16 divisors (see below), whose sum is σ = 224663107200. Its totient is φ = 188228753856.

The previous prime is 206258506481. The next prime is 206258506499. The reversal of 206258506493 is 394605852602.

It is not a de Polignac number, because 206258506493 - 2¹⁰ = 206258505469 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206258506499) 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, 152246 + ... + 660072.

It is an arithmetic number, because the mean of its divisors is an integer number (14041444200).

Almost surely, 2^206258506493 is an apocalyptic number.

It is an amenable number.

206258506493 is a deficient number, since it is larger than the sum of its proper divisors (18404600707).

206258506493 is a wasteful number, since it uses less digits than its factorization.

206258506493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508196.

The product of its (nonzero) digits is 3110400, while the sum is 50.

The spelling of 206258506493 in words is "two hundred six billion, two hundred fifty-eight million, five hundred six thousand, four hundred ninety-three".