20533254312 has 16 divisors (see below), whose sum is σ = 51333135840. Its totient is φ = 6844418096.

The previous prime is 20533254293. The next prime is 20533254317. The reversal of 20533254312 is 21345233502.

It is a super-2 number, since 2×20533254312² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20533254312.

It is not an unprimeable number, because it can be changed into a prime (20533254317) 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, 427776108 + ... + 427776155.

It is an arithmetic number, because the mean of its divisors is an integer number (3208320990).

Almost surely, 2^20533254312 is an apocalyptic number.

It is an amenable number.

20533254312 is an abundant number, since it is smaller than the sum of its proper divisors (30799881528).

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

20533254312 is a wasteful number, since it uses less digits than its factorization.

20533254312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855552272 (or 855552268 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 30.

Adding to 20533254312 its reverse (21345233502), we get a palindrome (41878487814).

The spelling of 20533254312 in words is "twenty billion, five hundred thirty-three million, two hundred fifty-four thousand, three hundred twelve".