20611325320 has 32 divisors (see below), whose sum is σ = 46415877120. Its totient is φ = 8237348800.

The previous prime is 20611325309. The next prime is 20611325341. The reversal of 20611325320 is 2352311602.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 177802 + ... + 269881.

It is an arithmetic number, because the mean of its divisors is an integer number (1450496160).

Almost surely, 2^20611325320 is an apocalyptic number.

20611325320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20611325320 is an abundant number, since it is smaller than the sum of its proper divisors (25804551800).

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

20611325320 is a wasteful number, since it uses less digits than its factorization.

20611325320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448845 (or 448841 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 20611325320 its reverse (2352311602), we get a palindrome (22963636922).

The spelling of 20611325320 in words is "twenty billion, six hundred eleven million, three hundred twenty-five thousand, three hundred twenty".