20203112144 has 10 divisors (see below), whose sum is σ = 39143529810. Its totient is φ = 10101556064.

The previous prime is 20203112143. The next prime is 20203112191. The reversal of 20203112144 is 44121130202.

It can be written as a sum of positive squares in only one way, i.e., 11965734544 + 8237377600 = 109388^2 + 90760^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203112143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 631347239 + ... + 631347270.

It is an arithmetic number, because the mean of its divisors is an integer number (3914352981).

Almost surely, 2^20203112144 is an apocalyptic number.

It is an amenable number.

20203112144 is a deficient number, since it is larger than the sum of its proper divisors (18940417666).

20203112144 is a wasteful number, since it uses less digits than its factorization.

20203112144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1262694517 (or 1262694511 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20203112144 its reverse (44121130202), we get a palindrome (64324242346).

The spelling of 20203112144 in words is "twenty billion, two hundred three million, one hundred twelve thousand, one hundred forty-four".