209250029650 has 24 divisors (see below), whose sum is σ = 390719495700. Its totient is φ = 83374325760.

The previous prime is 209250029629. The next prime is 209250029689. The reversal of 209250029650 is 56920052902.

It can be written as a sum of positive squares in 6 ways, for example, as 143600828809 + 65649200841 = 378947^2 + 256221^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8129175 + ... + 8154874.

Almost surely, 2^209250029650 is an apocalyptic number.

209250029650 is a deficient number, since it is larger than the sum of its proper divisors (181469466050).

209250029650 is a wasteful number, since it uses less digits than its factorization.

209250029650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16284318 (or 16284313 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 209250029650 in words is "two hundred nine billion, two hundred fifty million, twenty-nine thousand, six hundred fifty".