20988483989736 has 32 divisors (see below), whose sum is σ = 52617369355200. Its totient is φ = 6976673412480.

The previous prime is 20988483989549. The next prime is 20988483989741. The reversal of 20988483989736 is 63798938488902.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1217986045 + ... + 1218003276.

It is an arithmetic number, because the mean of its divisors is an integer number (1644292792350).

Almost surely, 2^{20988483989736} is an apocalyptic number.

It is an amenable number.

20988483989736 is an abundant number, since it is smaller than the sum of its proper divisors (31628885365464).

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

20988483989736 is a wasteful number, since it uses less digits than its factorization.

20988483989736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2435989689 (or 2435989685 counting only the distinct ones).

The product of its (nonzero) digits is 9029615616, while the sum is 84.

The spelling of 20988483989736 in words is "twenty trillion, nine hundred eighty-eight billion, four hundred eighty-three million, nine hundred eighty-nine thousand, seven hundred thirty-six".