20003315992 has 64 divisors (see below), whose sum is σ = 41419447200. Its totient is φ = 8981207040.

The previous prime is 20003315977. The next prime is 20003316013. The reversal of 20003315992 is 29951330002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2385984 + ... + 2394352.

Almost surely, 2^20003315992 is an apocalyptic number.

20003315992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20003315992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20709723600).

20003315992 is an abundant number, since it is smaller than the sum of its proper divisors (21416131208).

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

20003315992 is a wasteful number, since it uses less digits than its factorization.

20003315992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8716 (or 8712 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

Adding to 20003315992 its reverse (29951330002), we get a palindrome (49954645994).

The spelling of 20003315992 in words is "twenty billion, three million, three hundred fifteen thousand, nine hundred ninety-two".