20776296500 has 48 divisors (see below), whose sum is σ = 45603667200. Its totient is φ = 8268717600.

The previous prime is 20776296481. The next prime is 20776296509. The reversal of 20776296500 is 569267702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20776296509) 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, 4904 + ... + 203903.

It is an arithmetic number, because the mean of its divisors is an integer number (950076400).

Almost surely, 2^20776296500 is an apocalyptic number.

20776296500 is a gapful number since it is divisible by the number (20) 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 20776296500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22801833600).

20776296500 is an abundant number, since it is smaller than the sum of its proper divisors (24827370700).

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

20776296500 is a wasteful number, since it uses less digits than its factorization.

20776296500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209025 (or 209013 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 44.

The spelling of 20776296500 in words is "twenty billion, seven hundred seventy-six million, two hundred ninety-six thousand, five hundred".