206066131550 has 24 divisors (see below), whose sum is σ = 405829065456. Its totient is φ = 77577837440.

The previous prime is 206066131543. The next prime is 206066131589. The reversal of 206066131550 is 55131660602.

It is a super-3 number, since 3×206066131550³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 206066131550.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 121214522 + ... + 121216221.

It is an arithmetic number, because the mean of its divisors is an integer number (16909544394).

Almost surely, 2^206066131550 is an apocalyptic number.

206066131550 is a deficient number, since it is larger than the sum of its proper divisors (199762933906).

206066131550 is a wasteful number, since it uses less digits than its factorization.

206066131550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242430772 (or 242430767 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 206066131550 in words is "two hundred six billion, sixty-six million, one hundred thirty-one thousand, five hundred fifty".