20001355312 has 20 divisors (see below), whose sum is σ = 40437523440. Its totient is φ = 9565865408.

The previous prime is 20001355307. The next prime is 20001355313. The reversal of 20001355312 is 21355310002.

It is not an unprimeable number, because it can be changed into a prime (20001355313) 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, 27175387 + ... + 27176122.

It is an arithmetic number, because the mean of its divisors is an integer number (2021876172).

Almost surely, 2^20001355312 is an apocalyptic number.

It is an amenable number.

20001355312 is an abundant number, since it is smaller than the sum of its proper divisors (20436168128).

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

20001355312 is a wasteful number, since it uses less digits than its factorization.

20001355312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54351540 (or 54351534 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

Adding to 20001355312 its reverse (21355310002), we get a palindrome (41356665314).

The spelling of 20001355312 in words is "twenty billion, one million, three hundred fifty-five thousand, three hundred twelve".