201838216852 has 6 divisors (see below), whose sum is σ = 353216879498. Its totient is φ = 100919108424.

The previous prime is 201838216849. The next prime is 201838216873. The reversal of 201838216852 is 258612838102.

It can be written as a sum of positive squares in only one way, i.e., 195855813136 + 5982403716 = 442556^2 + 77346^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25229777103 + ... + 25229777110.

Almost surely, 2^201838216852 is an apocalyptic number.

It is an amenable number.

201838216852 is a deficient number, since it is larger than the sum of its proper divisors (151378662646).

201838216852 is a wasteful number, since it uses less digits than its factorization.

201838216852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50459554217 (or 50459554215 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 46.

The spelling of 201838216852 in words is "two hundred one billion, eight hundred thirty-eight million, two hundred sixteen thousand, eight hundred fifty-two".