20109124948 has 12 divisors (see below), whose sum is σ = 38390147712. Its totient is φ = 9140511320.

The previous prime is 20109124939. The next prime is 20109124949. The reversal of 20109124948 is 84942190102.

It is a self number, because there is not a number n which added to its sum of digits gives 20109124948.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20109124949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228512740 + ... + 228512827.

It is an arithmetic number, because the mean of its divisors is an integer number (3199178976).

Almost surely, 2^20109124948 is an apocalyptic number.

It is an amenable number.

20109124948 is a deficient number, since it is larger than the sum of its proper divisors (18281022764).

20109124948 is a wasteful number, since it uses less digits than its factorization.

20109124948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457025582 (or 457025580 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 40.

The spelling of 20109124948 in words is "twenty billion, one hundred nine million, one hundred twenty-four thousand, nine hundred forty-eight".