20443233412 has 24 divisors (see below), whose sum is σ = 40925062080. Its totient is φ = 8753115360.

The previous prime is 20443233403. The next prime is 20443233439. The reversal of 20443233412 is 21433234402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 314362 + ... + 373777.

It is an arithmetic number, because the mean of its divisors is an integer number (1705210920).

Almost surely, 2^20443233412 is an apocalyptic number.

It is an amenable number.

20443233412 is an abundant number, since it is smaller than the sum of its proper divisors (20481828668).

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

20443233412 is a wasteful number, since it uses less digits than its factorization.

20443233412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 689211 (or 689209 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 28.

Adding to 20443233412 its reverse (21433234402), we get a palindrome (41876467814).

The spelling of 20443233412 in words is "twenty billion, four hundred forty-three million, two hundred thirty-three thousand, four hundred twelve".