20773885320 has 384 divisors, whose sum is σ = 73497715200. Its totient is φ = 5271008256.

The previous prime is 20773885313. The next prime is 20773885351. The reversal of 20773885320 is 2358837702.

It is a super-2 number, since 2×20773885320² (a number of 21 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16902466 + ... + 16903694.

It is an arithmetic number, because the mean of its divisors is an integer number (191400300).

Almost surely, 2^20773885320 is an apocalyptic number.

20773885320 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 20773885320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36748857600).

20773885320 is an abundant number, since it is smaller than the sum of its proper divisors (52723829880).

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

20773885320 is a wasteful number, since it uses less digits than its factorization.

20773885320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1339 (or 1323 counting only the distinct ones).

The product of its (nonzero) digits is 564480, while the sum is 45.

The spelling of 20773885320 in words is "twenty billion, seven hundred seventy-three million, eight hundred eighty-five thousand, three hundred twenty".