209052246050 has 18 divisors (see below), whose sum is σ = 388843191219. Its totient is φ = 83619605200.

The previous prime is 209052246043. The next prime is 209052246113. The reversal of 209052246050 is 50642250902.

It can be written as a sum of positive squares in 5 ways, for example, as 131033809 + 208921212241 = 11447^2 + 457079^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=323305.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 209052246050.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3200720 + ... + 3265380.

Almost surely, 2^209052246050 is an apocalyptic number.

209052246050 is a deficient number, since it is larger than the sum of its proper divisors (179790945169).

209052246050 is an frugal number, since it uses more digits than its factorization.

209052246050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129334 (or 64668 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

Adding to 209052246050 its reverse (50642250902), we get a palindrome (259694496952).

The spelling of 209052246050 in words is "two hundred nine billion, fifty-two million, two hundred forty-six thousand, fifty".