20143215252 has 36 divisors (see below), whose sum is σ = 51780587040. Its totient is φ = 6600600912.

The previous prime is 20143215227. The next prime is 20143215259. The reversal of 20143215252 is 25251234102.

20143215252 is a `hidden beast` number, since 201 + 432 + 1 + 5 + 25 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20143215259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4739688 + ... + 4743935.

It is an arithmetic number, because the mean of its divisors is an integer number (1438349640).

Almost surely, 2^20143215252 is an apocalyptic number.

It is an amenable number.

20143215252 is an abundant number, since it is smaller than the sum of its proper divisors (31637371788).

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

20143215252 is a wasteful number, since it uses less digits than its factorization.

20143215252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9483692 (or 9483687 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 20143215252 its reverse (25251234102), we get a palindrome (45394449354).

The spelling of 20143215252 in words is "twenty billion, one hundred forty-three million, two hundred fifteen thousand, two hundred fifty-two".