201044439988 has 24 divisors (see below), whose sum is σ = 406606737600. Its totient is φ = 85193790528.

The previous prime is 201044439971. The next prime is 201044439989. The reversal of 201044439988 is 889934440102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044439989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40335478 + ... + 40340461.

It is an arithmetic number, because the mean of its divisors is an integer number (16941947400).

Almost surely, 2^201044439988 is an apocalyptic number.

201044439988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

201044439988 is an abundant number, since it is smaller than the sum of its proper divisors (205562297612).

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

201044439988 is a wasteful number, since it uses less digits than its factorization.

201044439988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80676039 (or 80676037 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 52.

The spelling of 201044439988 in words is "two hundred one billion, forty-four million, four hundred thirty-nine thousand, nine hundred eighty-eight".