20211994752 has 32 divisors (see below), whose sum is σ = 53688112080. Its totient is φ = 6737331456.

The previous prime is 20211994711. The next prime is 20211994753. The reversal of 20211994752 is 25749911202.

It is a tau number, because it is divible by the number of its divisors (32).

It is not an unprimeable number, because it can be changed into a prime (20211994753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26317318 + ... + 26318085.

Almost surely, 2^20211994752 is an apocalyptic number.

It is an amenable number.

20211994752 is an abundant number, since it is smaller than the sum of its proper divisors (33476117328).

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

20211994752 is an equidigital number, since it uses as much as digits as its factorization.

20211994752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52635420 (or 52635408 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The spelling of 20211994752 in words is "twenty billion, two hundred eleven million, nine hundred ninety-four thousand, seven hundred fifty-two".