20252765184 has 352 divisors, whose sum is σ = 59261730816. Its totient is φ = 6131220480.

The previous prime is 20252765167. The next prime is 20252765189. The reversal of 20252765184 is 48156725202.

It is not an unprimeable number, because it can be changed into a prime (20252765189) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 159470529 + ... + 159470655.

Almost surely, 2^20252765184 is an apocalyptic number.

20252765184 is a gapful number since it is divisible by the number (24) 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 20252765184, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29630865408).

20252765184 is an abundant number, since it is smaller than the sum of its proper divisors (39008965632).

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

20252765184 is a wasteful number, since it uses less digits than its factorization.

20252765184 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The spelling of 20252765184 in words is "twenty billion, two hundred fifty-two million, seven hundred sixty-five thousand, one hundred eighty-four".