206315625438 has 48 divisors (see below), whose sum is σ = 482580374640. Its totient is φ = 63326489472.

The previous prime is 206315625407. The next prime is 206315625449. The reversal of 206315625438 is 834526513602.

206315625438 is a `hidden beast` number, since 2 + 0 + 6 + 3 + 1 + 562 + 54 + 38 = 666.

206315625438 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×206315625438² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 206315625393 and 206315625402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 982156 + ... + 1173567.

It is an arithmetic number, because the mean of its divisors is an integer number (10053757805).

Almost surely, 2^206315625438 is an apocalyptic number.

206315625438 is an abundant number, since it is smaller than the sum of its proper divisors (276264749202).

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

206315625438 is a wasteful number, since it uses less digits than its factorization.

206315625438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156153 (or 2156150 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 45.

The spelling of 206315625438 in words is "two hundred six billion, three hundred fifteen million, six hundred twenty-five thousand, four hundred thirty-eight".