20513301200 has 90 divisors (see below), whose sum is σ = 57329498646. Its totient is φ = 7033125120.

The previous prime is 20513301187. The next prime is 20513301223. The reversal of 20513301200 is 210331502.

It can be written as a sum of positive squares in 3 ways, for example, as 3002601616 + 17510699584 = 54796^2 + 132328^2 .

It is a super-2 number, since 2×20513301200² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 503699 + ... + 542898.

Almost surely, 2^20513301200 is an apocalyptic number.

20513301200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20513301200 is an abundant number, since it is smaller than the sum of its proper divisors (36816197446).

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

20513301200 is a wasteful number, since it uses less digits than its factorization.

20513301200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1046629 (or 1046611 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

Adding to 20513301200 its reverse (210331502), we get a palindrome (20723632702).

The spelling of 20513301200 in words is "twenty billion, five hundred thirteen million, three hundred one thousand, two hundred".