20144245152 has 48 divisors (see below), whose sum is σ = 52891211520. Its totient is φ = 6713152512.

The previous prime is 20144245123. The next prime is 20144245157. The reversal of 20144245152 is 25154244102.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×20144245152² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20144245157) 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 7 ways as a sum of consecutive naturals, for example, 422728 + ... + 467960.

It is an arithmetic number, because the mean of its divisors is an integer number (1101900240).

Almost surely, 2^20144245152 is an apocalyptic number.

It is an amenable number.

20144245152 is an abundant number, since it is smaller than the sum of its proper divisors (32746966368).

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

20144245152 is a wasteful number, since it uses less digits than its factorization.

20144245152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49885 (or 49877 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 30.

Adding to 20144245152 its reverse (25154244102), we get a palindrome (45298489254).

The spelling of 20144245152 in words is "twenty billion, one hundred forty-four million, two hundred forty-five thousand, one hundred fifty-two".