20324355012 has 72 divisors (see below), whose sum is σ = 57235290840. Its totient is φ = 6038000640.

The previous prime is 20324355011. The next prime is 20324355013. The reversal of 20324355012 is 21055342302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20324355011) and next prime (20324355013).

It can be written as a sum of positive squares in 4 ways, for example, as 979439616 + 19344915396 = 31296^2 + 139086^2 .

It is not an unprimeable number, because it can be changed into a prime (20324355011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 735189 + ... + 762332.

It is an arithmetic number, because the mean of its divisors is an integer number (794934595).

Almost surely, 2^20324355012 is an apocalyptic number.

It is an amenable number.

20324355012 is an abundant number, since it is smaller than the sum of its proper divisors (36910935828).

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

20324355012 is a wasteful number, since it uses less digits than its factorization.

20324355012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497573 (or 1497568 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

Adding to 20324355012 its reverse (21055342302), we get a palindrome (41379697314).

The spelling of 20324355012 in words is "twenty billion, three hundred twenty-four million, three hundred fifty-five thousand, twelve".