206613531630 has 96 divisors (see below), whose sum is σ = 600324667488. Its totient is φ = 48866457600.

The previous prime is 206613531577. The next prime is 206613531659. The reversal of 206613531630 is 36135316602.

206613531630 is a `hidden beast` number, since 2 + 0 + 6 + 6 + 13 + 5 + 3 + 1 + 630 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2504539 + ... + 2585718.

It is an arithmetic number, because the mean of its divisors is an integer number (6253381953).

Almost surely, 2^206613531630 is an apocalyptic number.

206613531630 is an abundant number, since it is smaller than the sum of its proper divisors (393711135858).

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

206613531630 is a wasteful number, since it uses less digits than its factorization.

206613531630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5090322 (or 5090319 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The spelling of 206613531630 in words is "two hundred six billion, six hundred thirteen million, five hundred thirty-one thousand, six hundred thirty".