20371307552 has 54 divisors (see below), whose sum is σ = 41963819373. Its totient is φ = 9733917952.

The previous prime is 20371307533. The next prime is 20371307557. The reversal of 20371307552 is 25570317302.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 19375526416 + 995781136 = 139196^2 + 31556^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=100924.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20371307557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 18569468 + ... + 18570564.

Almost surely, 2^20371307552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20371307552

20371307552 is an abundant number, since it is smaller than the sum of its proper divisors (21592511821).

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

20371307552 is an frugal number, since it uses more digits than its factorization.

20371307552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2250 (or 1122 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 35.

The spelling of 20371307552 in words is "twenty billion, three hundred seventy-one million, three hundred seven thousand, five hundred fifty-two".