20228603438764 has 48 divisors (see below), whose sum is σ = 40899856870656. Its totient is φ = 8574724728000.

The previous prime is 20228603438711. The next prime is 20228603438767. The reversal of 20228603438764 is 46783430682202.

It is not an unprimeable number, because it can be changed into a prime (20228603438767) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937314 + ... + 6429289.

It is an arithmetic number, because the mean of its divisors is an integer number (852080351472).

Almost surely, 2^{20228603438764} is an apocalyptic number.

It is an amenable number.

20228603438764 is an abundant number, since it is smaller than the sum of its proper divisors (20671253431892).

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

20228603438764 is a wasteful number, since it uses less digits than its factorization.

20228603438764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7367686 (or 7367684 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 55.

The spelling of 20228603438764 in words is "twenty trillion, two hundred twenty-eight billion, six hundred three million, four hundred thirty-eight thousand, seven hundred sixty-four".