20263422004 has 24 divisors (see below), whose sum is σ = 42288882048. Its totient is φ = 8306744160.

The previous prime is 20263421989. The next prime is 20263422013. The reversal of 20263422004 is 40022436202.

It is a self number, because there is not a number n which added to its sum of digits gives 20263422004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15731827 + ... + 15733114.

It is an arithmetic number, because the mean of its divisors is an integer number (1762036752).

Almost surely, 2^20263422004 is an apocalyptic number.

It is an amenable number.

20263422004 is an abundant number, since it is smaller than the sum of its proper divisors (22025460044).

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

20263422004 is a wasteful number, since it uses less digits than its factorization.

20263422004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31464975 (or 31464973 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 20263422004 its reverse (40022436202), we get a palindrome (60285858206).

The spelling of 20263422004 in words is "twenty billion, two hundred sixty-three million, four hundred twenty-two thousand, four".