20512243352 has 16 divisors (see below), whose sum is σ = 38467297440. Its totient is φ = 10254297376.

The previous prime is 20512243337. The next prime is 20512243357. The reversal of 20512243352 is 25334221502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20512243357) 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, 179648 + ... + 270735.

It is an arithmetic number, because the mean of its divisors is an integer number (2404206090).

Almost surely, 2^20512243352 is an apocalyptic number.

It is an amenable number.

20512243352 is a deficient number, since it is larger than the sum of its proper divisors (17955054088).

20512243352 is a wasteful number, since it uses less digits than its factorization.

20512243352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456082 (or 456078 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 29.

Adding to 20512243352 its reverse (25334221502), we get a palindrome (45846464854).

The spelling of 20512243352 in words is "twenty billion, five hundred twelve million, two hundred forty-three thousand, three hundred fifty-two".