20433132312 has 64 divisors (see below), whose sum is σ = 52235020800. Its totient is φ = 6657782400.

The previous prime is 20433132257. The next prime is 20433132319. The reversal of 20433132312 is 21323133402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20433132319) 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, 924187 + ... + 946037.

It is an arithmetic number, because the mean of its divisors is an integer number (816172200).

Almost surely, 2^20433132312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20433132312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26117510400).

20433132312 is an abundant number, since it is smaller than the sum of its proper divisors (31801888488).

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

20433132312 is a wasteful number, since it uses less digits than its factorization.

20433132312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22736 (or 22732 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 24.

Adding to 20433132312 its reverse (21323133402), we get a palindrome (41756265714).

The spelling of 20433132312 in words is "twenty billion, four hundred thirty-three million, one hundred thirty-two thousand, three hundred twelve".