201043321938 has 12 divisors (see below), whose sum is σ = 435593864238. Its totient is φ = 67014440640.

The previous prime is 201043321933. The next prime is 201043321939. The reversal of 201043321938 is 839123340102.

201043321938 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 433 + 219 + 3 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124719866649 + 76323455289 = 353157^2 + 276267^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201043321933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5584536703 + ... + 5584536738.

Almost surely, 2^201043321938 is an apocalyptic number.

201043321938 is an abundant number, since it is smaller than the sum of its proper divisors (234550542300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

201043321938 is a wasteful number, since it uses less digits than its factorization.

201043321938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11169073449 (or 11169073446 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 201043321938 in words is "two hundred one billion, forty-three million, three hundred twenty-one thousand, nine hundred thirty-eight".