20964760208 has 120 divisors (see below), whose sum is σ = 49671963648. Its totient is φ = 8394223104.

The previous prime is 20964760177. The next prime is 20964760211. The reversal of 20964760208 is 80206746902.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2947985 + ... + 2955087.

Almost surely, 2^20964760208 is an apocalyptic number.

20964760208 is a gapful number since it is divisible by the number (28) 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 20964760208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24835981824).

20964760208 is an abundant number, since it is smaller than the sum of its proper divisors (28707203440).

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

20964760208 is a wasteful number, since it uses less digits than its factorization.

20964760208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7229 (or 7204 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 44.

The spelling of 20964760208 in words is "twenty billion, nine hundred sixty-four million, seven hundred sixty thousand, two hundred eight".