201236576836 has 27 divisors (see below), whose sum is σ = 358129229367. Its totient is φ = 98941892640.

The previous prime is 201236576777. The next prime is 201236576857. The reversal of 201236576836 is 638675632102.

The square root of 201236576836 is 448594.

It is a perfect power (a square), and thus also a powerful number.

201236576836 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15868440900 + 185368135936 = 125970^2 + 430544^2 .

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 201236576836.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 54726630 + ... + 54730306.

Almost surely, 2^201236576836 is an apocalyptic number.

201236576836 is the 448594-th square number.

It is an amenable number.

201236576836 is a deficient number, since it is larger than the sum of its proper divisors (156892652531).

201236576836 is an frugal number, since it uses more digits than its factorization.

201236576836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7480 (or 3740 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 49.

Multiplying 201236576836 by its sum of digits (49), we get a square (9860592264964 = 3140158²).

The spelling of 201236576836 in words is "two hundred one billion, two hundred thirty-six million, five hundred seventy-six thousand, eight hundred thirty-six".