201020019969928 has 16 divisors (see below), whose sum is σ = 377098300183500. Its totient is φ = 100460473254336.

The previous prime is 201020019969917. The next prime is 201020019969929. The reversal of 201020019969928 is 829969910020102.

It can be written as a sum of positive squares in 2 ways, for example, as 170439761446564 + 30580258523364 = 13055258^2 + 5529942^2 .

It is not an unprimeable number, because it can be changed into a prime (201020019969929) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6192074083 + ... + 6192106546.

Almost surely, 2^{201020019969928} is an apocalyptic number.

It is an amenable number.

201020019969928 is a deficient number, since it is larger than the sum of its proper divisors (176078280213572).

201020019969928 is a wasteful number, since it uses less digits than its factorization.

201020019969928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12384182664 (or 12384182660 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 58.

The spelling of 201020019969928 in words is "two hundred one trillion, twenty billion, nineteen million, nine hundred sixty-nine thousand, nine hundred twenty-eight".