20345320200 has 48 divisors (see below), whose sum is σ = 63070494480. Its totient is φ = 5425418560.

The previous prime is 20345320141. The next prime is 20345320201. The reversal of 20345320200 is 202354302.

It is not an unprimeable number, because it can be changed into a prime (20345320201) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 16953834 + ... + 16955033.

It is an arithmetic number, because the mean of its divisors is an integer number (1313968635).

Almost surely, 2^20345320200 is an apocalyptic number.

20345320200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20345320200 is an abundant number, since it is smaller than the sum of its proper divisors (42725174280).

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

20345320200 is a wasteful number, since it uses less digits than its factorization.

20345320200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33908886 (or 33908877 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 21.

Adding to 20345320200 its reverse (202354302), we get a palindrome (20547674502).

The spelling of 20345320200 in words is "twenty billion, three hundred forty-five million, three hundred twenty thousand, two hundred".