20350000312500 has 192 divisors, whose sum is σ = 60327201811968. Its totient is φ = 5337690000000.

The previous prime is 20350000312451. The next prime is 20350000312501. The reversal of 20350000312500 is 521300005302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20350000312501) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 57009577 + ... + 57365423.

It is an arithmetic number, because the mean of its divisors is an integer number (314204176104).

Almost surely, 2^{20350000312500} is an apocalyptic number.

20350000312500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20350000312500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30163600905984).

20350000312500 is an abundant number, since it is smaller than the sum of its proper divisors (39977201499468).

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

20350000312500 is an frugal number, since it uses more digits than its factorization.

20350000312500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 355950 (or 355918 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

Adding to 20350000312500 its reverse (521300005302), we get a palindrome (20871300317802).

The spelling of 20350000312500 in words is "twenty trillion, three hundred fifty billion, three hundred twelve thousand, five hundred".