20201209968 has 40 divisors (see below), whose sum is σ = 52403030416. Its totient is φ = 6705792000.

The previous prime is 20201209933. The next prime is 20201209969. The reversal of 20201209968 is 86990210202.

It is a super-2 number, since 2×20201209968² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201209969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 861583 + ... + 884718.

Almost surely, 2^20201209968 is an apocalyptic number.

It is an amenable number.

20201209968 is an abundant number, since it is smaller than the sum of its proper divisors (32201820448).

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

20201209968 is a wasteful number, since it uses less digits than its factorization.

20201209968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746553 (or 1746547 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The spelling of 20201209968 in words is "twenty billion, two hundred one million, two hundred nine thousand, nine hundred sixty-eight".