20520450200 has 48 divisors (see below), whose sum is σ = 47832876000. Its totient is φ = 8187048320.

The previous prime is 20520450179. The next prime is 20520450221. The reversal of 20520450200 is 205402502.

It is an interprime number because it is at equal distance from previous prime (20520450179) and next prime (20520450221).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54080 + ... + 209679.

It is an arithmetic number, because the mean of its divisors is an integer number (996518250).

Almost surely, 2^20520450200 is an apocalyptic number.

20520450200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20520450200 is an abundant number, since it is smaller than the sum of its proper divisors (27312425800).

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

20520450200 is a wasteful number, since it uses less digits than its factorization.

20520450200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264164 (or 264155 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

Adding to 20520450200 its reverse (205402502), we get a palindrome (20725852702).

The spelling of 20520450200 in words is "twenty billion, five hundred twenty million, four hundred fifty thousand, two hundred".