206620243426 has 16 divisors (see below), whose sum is σ = 327482971200. Its totient is φ = 97500602448.

The previous prime is 206620243397. The next prime is 206620243451. The reversal of 206620243426 is 624342026602.

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, 10327221 + ... + 10347208.

It is an arithmetic number, because the mean of its divisors is an integer number (20467685700).

Almost surely, 2^206620243426 is an apocalyptic number.

206620243426 is a deficient number, since it is larger than the sum of its proper divisors (120862727774).

206620243426 is a wasteful number, since it uses less digits than its factorization.

206620243426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20674713.

The product of its (nonzero) digits is 165888, while the sum is 37.

The spelling of 206620243426 in words is "two hundred six billion, six hundred twenty million, two hundred forty-three thousand, four hundred twenty-six".