20800451320 has 192 divisors, whose sum is σ = 55714016160. Its totient is φ = 6924902400.

The previous prime is 20800451311. The next prime is 20800451333. The reversal of 20800451320 is 2315400802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4702710 + ... + 4707130.

Almost surely, 2^20800451320 is an apocalyptic number.

20800451320 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 20800451320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27857008080).

20800451320 is an abundant number, since it is smaller than the sum of its proper divisors (34913564840).

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

20800451320 is a wasteful number, since it uses less digits than its factorization.

20800451320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4514 (or 4493 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The spelling of 20800451320 in words is "twenty billion, eight hundred million, four hundred fifty-one thousand, three hundred twenty".