206215344906 has 16 divisors (see below), whose sum is σ = 412436142144. Its totient is φ = 68737539584.

The previous prime is 206215344899. The next prime is 206215344913. The reversal of 206215344906 is 609443512602.

It is an interprime number because it is at equal distance from previous prime (206215344899) and next prime (206215344913).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395995 + ... + 754481.

It is an arithmetic number, because the mean of its divisors is an integer number (25777258884).

Almost surely, 2^206215344906 is an apocalyptic number.

206215344906 is an abundant number, since it is smaller than the sum of its proper divisors (206220797238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

206215344906 is a wasteful number, since it uses less digits than its factorization.

206215344906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 454365.

The product of its (nonzero) digits is 311040, while the sum is 42.

The spelling of 206215344906 in words is "two hundred six billion, two hundred fifteen million, three hundred forty-four thousand, nine hundred six".