20243320412 has 36 divisors (see below), whose sum is σ = 41217727824. Its totient is φ = 8674001280.

The previous prime is 20243320411. The next prime is 20243320507. The reversal of 20243320412 is 21402334202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20243320411) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 1956212 + ... + 1966532.

It is an arithmetic number, because the mean of its divisors is an integer number (1144936884).

Almost surely, 2^20243320412 is an apocalyptic number.

It is an amenable number.

20243320412 is an abundant number, since it is smaller than the sum of its proper divisors (20974407412).

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

20243320412 is a wasteful number, since it uses less digits than its factorization.

20243320412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20346 (or 20337 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 20243320412 its reverse (21402334202), we get a palindrome (41645654614).

The spelling of 20243320412 in words is "twenty billion, two hundred forty-three million, three hundred twenty thousand, four hundred twelve".