20946116208 has 80 divisors (see below), whose sum is σ = 55914484736. Its totient is φ = 6749775360.

The previous prime is 20946116197. The next prime is 20946116263. The reversal of 20946116208 is 80261164902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530291 + ... + 1543917.

Almost surely, 2^20946116208 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 20946116208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27957242368).

20946116208 is an abundant number, since it is smaller than the sum of its proper divisors (34968368528).

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

20946116208 is a wasteful number, since it uses less digits than its factorization.

20946116208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14702 (or 14696 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 20946116208 in words is "twenty billion, nine hundred forty-six million, one hundred sixteen thousand, two hundred eight".