20123302144 has 36 divisors (see below), whose sum is σ = 43819639920. Its totient is φ = 9146954240.

The previous prime is 20123302093. The next prime is 20123302151. The reversal of 20123302144 is 44120332102.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3570214 + ... + 3575845.

It is an arithmetic number, because the mean of its divisors is an integer number (1217212220).

Almost surely, 2^20123302144 is an apocalyptic number.

It is an amenable number.

20123302144 is an abundant number, since it is smaller than the sum of its proper divisors (23696337776).

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

20123302144 is an equidigital number, since it uses as much as digits as its factorization.

20123302144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7146086 (or 7146072 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 20123302144 its reverse (44120332102), we get a palindrome (64243634246).

The spelling of 20123302144 in words is "twenty billion, one hundred twenty-three million, three hundred two thousand, one hundred forty-four".