209013212053 has 8 divisors (see below), whose sum is σ = 209387647800. Its totient is φ = 208639002048.

The previous prime is 209013212041. The next prime is 209013212071. The reversal of 209013212053 is 350212310902.

It can be written as a sum of positive squares in 4 ways, for example, as 24050426724 + 184962785329 = 155082^2 + 430073^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-209013212053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209013212003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1854603 + ... + 1964071.

It is an arithmetic number, because the mean of its divisors is an integer number (26173455975).

Almost surely, 2^209013212053 is an apocalyptic number.

It is an amenable number.

209013212053 is a deficient number, since it is larger than the sum of its proper divisors (374435747).

209013212053 is a wasteful number, since it uses less digits than its factorization.

209013212053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112871.

The product of its (nonzero) digits is 3240, while the sum is 28.

Adding to 209013212053 its reverse (350212310902), we get a palindrome (559225522955).

The spelling of 209013212053 in words is "two hundred nine billion, thirteen million, two hundred twelve thousand, fifty-three".