20205220152 has 128 divisors (see below), whose sum is σ = 54809395200. Its totient is φ = 6170284032.

The previous prime is 20205220039. The next prime is 20205220153. The reversal of 20205220152 is 25102250202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20205220153) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42181849 + ... + 42182327.

It is an arithmetic number, because the mean of its divisors is an integer number (428198400).

Almost surely, 2^20205220152 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 20205220152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27404697600).

20205220152 is an abundant number, since it is smaller than the sum of its proper divisors (34604175048).

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

20205220152 is a wasteful number, since it uses less digits than its factorization.

20205220152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1237 (or 1233 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

Adding to 20205220152 its reverse (25102250202), we get a palindrome (45307470354).

The spelling of 20205220152 in words is "twenty billion, two hundred five million, two hundred twenty thousand, one hundred fifty-two".