20533420312 has 16 divisors (see below), whose sum is σ = 38537448840. Its totient is φ = 10256767296.

The previous prime is 20533420279. The next prime is 20533420319. The reversal of 20533420312 is 21302433502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20533420319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1234078 + ... + 1250605.

Almost surely, 2^20533420312 is an apocalyptic number.

It is an amenable number.

20533420312 is a deficient number, since it is larger than the sum of its proper divisors (18004028528).

20533420312 is a wasteful number, since it uses less digits than its factorization.

20533420312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2485722 (or 2485718 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20533420312 its reverse (21302433502), we get a palindrome (41835853814).

The spelling of 20533420312 in words is "twenty billion, five hundred thirty-three million, four hundred twenty thousand, three hundred twelve".