20139118848 has 216 divisors, whose sum is σ = 59105906496. Its totient is φ = 6594048000.

The previous prime is 20139118841. The next prime is 20139118889. The reversal of 20139118848 is 84881193102.

20139118848 is a `hidden beast` number, since 201 + 391 + 18 + 8 + 48 = 666.

It is not an unprimeable number, because it can be changed into a prime (20139118841) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37225458 + ... + 37225998.

It is an arithmetic number, because the mean of its divisors is an integer number (273638456).

Almost surely, 2^20139118848 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20139118848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29552953248).

20139118848 is an abundant number, since it is smaller than the sum of its proper divisors (38966787648).

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

20139118848 is a wasteful number, since it uses less digits than its factorization.

20139118848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 821 (or 804 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 45.

The spelling of 20139118848 in words is "twenty billion, one hundred thirty-nine million, one hundred eighteen thousand, eight hundred forty-eight".