20079321600 has 960 divisors, whose sum is σ = 78851203200. Its totient is φ = 4459069440.

The previous prime is 20079321569. The next prime is 20079321601. The reversal of 20079321600 is 612397002.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (20079321601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 275059164 + ... + 275059236.

It is an arithmetic number, because the mean of its divisors is an integer number (82136670).

Almost surely, 2^20079321600 is an apocalyptic number.

20079321600 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 20079321600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39425601600).

20079321600 is an abundant number, since it is smaller than the sum of its proper divisors (58771881600).

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

20079321600 is a wasteful number, since it uses less digits than its factorization.

20079321600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The spelling of 20079321600 in words is "twenty billion, seventy-nine million, three hundred twenty-one thousand, six hundred".