20099918592 has 432 divisors, whose sum is σ = 65890056960. Its totient is φ = 5846556672.

The previous prime is 20099918561. The next prime is 20099918593. The reversal of 20099918592 is 29581999002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20099918593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112289959 + ... + 112290137.

It is an arithmetic number, because the mean of its divisors is an integer number (152523280).

Almost surely, 2^20099918592 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 20099918592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32945028480).

20099918592 is an abundant number, since it is smaller than the sum of its proper divisors (45790138368).

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

20099918592 is a wasteful number, since it uses less digits than its factorization.

20099918592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400 (or 383 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 54.

The spelling of 20099918592 in words is "twenty billion, ninety-nine million, nine hundred eighteen thousand, five hundred ninety-two".