20211733608 has 32 divisors (see below), whose sum is σ = 55122910560. Its totient is φ = 6124767680.

The previous prime is 20211733603. The next prime is 20211733639. The reversal of 20211733608 is 80633711202.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (20211733601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38279535 + ... + 38280062.

It is an arithmetic number, because the mean of its divisors is an integer number (1722590955).

Almost surely, 2^20211733608 is an apocalyptic number.

It is an amenable number.

20211733608 is an abundant number, since it is smaller than the sum of its proper divisors (34911176952).

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

20211733608 is a wasteful number, since it uses less digits than its factorization.

20211733608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76559617 (or 76559613 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 33.

The spelling of 20211733608 in words is "twenty billion, two hundred eleven million, seven hundred thirty-three thousand, six hundred eight".