20123130444 has 48 divisors (see below), whose sum is σ = 47410269312. Its totient is φ = 6642819072.

The previous prime is 20123130439. The next prime is 20123130487. The reversal of 20123130444 is 44403132102.

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 15 ways as a sum of consecutive naturals, for example, 535372 + ... + 571724.

It is an arithmetic number, because the mean of its divisors is an integer number (987713944).

Almost surely, 2^20123130444 is an apocalyptic number.

It is an amenable number.

20123130444 is an abundant number, since it is smaller than the sum of its proper divisors (27287138868).

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

20123130444 is a wasteful number, since it uses less digits than its factorization.

20123130444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36806 (or 36804 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 20123130444 its reverse (44403132102), we get a palindrome (64526262546).

The spelling of 20123130444 in words is "twenty billion, one hundred twenty-three million, one hundred thirty thousand, four hundred forty-four".