20336786888 has 64 divisors (see below), whose sum is σ = 42019560000. Its totient is φ = 9150668800.

The previous prime is 20336786887. The next prime is 20336786917. The reversal of 20336786888 is 88868763302.

It is not an unprimeable number, because it can be changed into a prime (20336786881) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5174108 + ... + 5178036.

It is an arithmetic number, because the mean of its divisors is an integer number (656555625).

Almost surely, 2^20336786888 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 20336786888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21009780000).

20336786888 is an abundant number, since it is smaller than the sum of its proper divisors (21682773112).

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

20336786888 is a wasteful number, since it uses less digits than its factorization.

20336786888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4526 (or 4522 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 20336786888 in words is "twenty billion, three hundred thirty-six million, seven hundred eighty-six thousand, eight hundred eighty-eight".