206275985406 has 24 divisors (see below), whose sum is σ = 462342727080. Its totient is φ = 66387673296.

The previous prime is 206275985401. The next prime is 206275985407. The reversal of 206275985406 is 604589572602.

206275985406 is a `hidden beast` number, since 2 + 0 + 6 + 2 + 7 + 5 + 98 + 540 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206275985401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 197581840 + ... + 197582883.

It is an arithmetic number, because the mean of its divisors is an integer number (19264280295).

Almost surely, 2^206275985406 is an apocalyptic number.

206275985406 is an abundant number, since it is smaller than the sum of its proper divisors (256066741674).

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

206275985406 is a wasteful number, since it uses less digits than its factorization.

206275985406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395164760 (or 395164757 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 54.

The spelling of 206275985406 in words is "two hundred six billion, two hundred seventy-five million, nine hundred eighty-five thousand, four hundred six".