20376512500 has 72 divisors (see below), whose sum is σ = 45413202744. Its totient is φ = 7996560000.

The previous prime is 20376512491. The next prime is 20376512561. The reversal of 20376512500 is 521567302.

It can be written as a sum of positive squares in 12 ways, for example, as 20133339664 + 243172836 = 141892^2 + 15594^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 647122 + ... + 677878.

It is an arithmetic number, because the mean of its divisors is an integer number (630738927).

Almost surely, 2^20376512500 is an apocalyptic number.

20376512500 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 20376512500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22706601372).

20376512500 is an abundant number, since it is smaller than the sum of its proper divisors (25036690244).

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

20376512500 is an equidigital number, since it uses as much as digits as its factorization.

20376512500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30839 (or 30817 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 31.

The spelling of 20376512500 in words is "twenty billion, three hundred seventy-six million, five hundred twelve thousand, five hundred".