20343055512 has 32 divisors (see below), whose sum is σ = 54769765680. Its totient is φ = 6259401600.

The previous prime is 20343055501. The next prime is 20343055519. The reversal of 20343055512 is 21555034302.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20343055512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20343055519) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32600739 + ... + 32601362.

Almost surely, 2^20343055512 is an apocalyptic number.

It is an amenable number.

20343055512 is an abundant number, since it is smaller than the sum of its proper divisors (34426710168).

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

20343055512 is a wasteful number, since it uses less digits than its factorization.

20343055512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65202123 (or 65202119 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

Adding to 20343055512 its reverse (21555034302), we get a palindrome (41898089814).

The spelling of 20343055512 in words is "twenty billion, three hundred forty-three million, fifty-five thousand, five hundred twelve".