206315625402 has 12 divisors (see below), whose sum is σ = 447017188410. Its totient is φ = 68771875128.

The previous prime is 206315625251. The next prime is 206315625407. The reversal of 206315625402 is 204526513602.

206315625402 is a `hidden beast` number, since 2 + 0 + 63 + 1 + 56 + 2 + 540 + 2 = 666.

206315625402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 126813619881 + 79502005521 = 356109^2 + 281961^2 .

It is a super-2 number, since 2×206315625402² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (206315625407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5730989577 + ... + 5730989612.

Almost surely, 2^206315625402 is an apocalyptic number.

206315625402 is an abundant number, since it is smaller than the sum of its proper divisors (240701563008).

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

206315625402 is a wasteful number, since it uses less digits than its factorization.

206315625402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11461979197 (or 11461979194 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 36.

The spelling of 206315625402 in words is "two hundred six billion, three hundred fifteen million, six hundred twenty-five thousand, four hundred two".