20333404164 has 24 divisors (see below), whose sum is σ = 47493498528. Its totient is φ = 6770817280.

The previous prime is 20333404163. The next prime is 20333404199. The reversal of 20333404164 is 46140433302.

It is not an unprimeable number, because it can be changed into a prime (20333404163) 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, 860877 + ... + 884180.

It is an arithmetic number, because the mean of its divisors is an integer number (1978895772).

Almost surely, 2^20333404164 is an apocalyptic number.

It is an amenable number.

20333404164 is an abundant number, since it is smaller than the sum of its proper divisors (27160094364).

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

20333404164 is a wasteful number, since it uses less digits than its factorization.

20333404164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1746035 (or 1746033 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 30.

Adding to 20333404164 its reverse (46140433302), we get a palindrome (66473837466).

The spelling of 20333404164 in words is "twenty billion, three hundred thirty-three million, four hundred four thousand, one hundred sixty-four".