20051507200 has 72 divisors (see below), whose sum is σ = 49715724240. Its totient is φ = 8020582400.

The previous prime is 20051507173. The next prime is 20051507221. The reversal of 20051507200 is 270515002.

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 5 ways as a sum of consecutive naturals, for example, 144616 + ... + 247015.

It is an arithmetic number, because the mean of its divisors is an integer number (690496170).

Almost surely, 2^20051507200 is an apocalyptic number.

20051507200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20051507200 is an abundant number, since it is smaller than the sum of its proper divisors (29664217040).

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

20051507200 is an equidigital number, since it uses as much as digits as its factorization.

20051507200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391663 (or 391638 counting only the distinct ones).

The product of its (nonzero) digits is 700, while the sum is 22.

The spelling of 20051507200 in words is "twenty billion, fifty-one million, five hundred seven thousand, two hundred".