206561150452500 has 180 divisors, whose sum is σ = 635644399731264. Its totient is φ = 52183868904000.

The previous prime is 206561150452471. The next prime is 206561150452511. The reversal of 206561150452500 is 5254051165602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 35438604 + ... + 40853603.

Almost surely, 2^{206561150452500} is an apocalyptic number.

206561150452500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206561150452500 is an abundant number, since it is smaller than the sum of its proper divisors (429083249278764).

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

206561150452500 is a wasteful number, since it uses less digits than its factorization.

206561150452500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76292272 (or 76292236 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 42.

The spelling of 206561150452500 in words is "two hundred six trillion, five hundred sixty-one billion, one hundred fifty million, four hundred fifty-two thousand, five hundred".