206521645201232 has 20 divisors (see below), whose sum is σ = 400135920445140. Its totient is φ = 103260762505728.

The previous prime is 206521645201229. The next prime is 206521645201259. The reversal of 206521645201232 is 232102546125602.

It can be written as a sum of positive squares in 2 ways, for example, as 18213980270656 + 188307664930576 = 4267784^2 + 13722524^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 206521645201232.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40146494 + ... + 44997602.

It is an arithmetic number, because the mean of its divisors is an integer number (20006796022257).

Almost surely, 2^{206521645201232} is an apocalyptic number.

It is an amenable number.

206521645201232 is a deficient number, since it is larger than the sum of its proper divisors (193614275243908).

206521645201232 is a wasteful number, since it uses less digits than its factorization.

206521645201232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511870 (or 7511864 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 41.

The spelling of 206521645201232 in words is "two hundred six trillion, five hundred twenty-one billion, six hundred forty-five million, two hundred one thousand, two hundred thirty-two".