20113321144 has 16 divisors (see below), whose sum is σ = 43099974000. Its totient is φ = 8619994752.

The previous prime is 20113321133. The next prime is 20113321157. The reversal of 20113321144 is 44112331102.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179583169 + ... + 179583280.

It is an arithmetic number, because the mean of its divisors is an integer number (2693748375).

Almost surely, 2^20113321144 is an apocalyptic number.

It is an amenable number.

20113321144 is an abundant number, since it is smaller than the sum of its proper divisors (22986652856).

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

20113321144 is a wasteful number, since it uses less digits than its factorization.

20113321144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359166462 (or 359166458 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 20113321144 its reverse (44112331102), we get a palindrome (64225652246).

The spelling of 20113321144 in words is "twenty billion, one hundred thirteen million, three hundred twenty-one thousand, one hundred forty-four".