20959596320 has 144 divisors (see below), whose sum is σ = 53780571432. Its totient is φ = 7715635200.

The previous prime is 20959596313. The next prime is 20959596353. The reversal of 20959596320 is 2369595902.

It can be written as a sum of positive squares in 12 ways, for example, as 2690289424 + 18269306896 = 51868^2 + 135164^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10842074 + ... + 10844006.

Almost surely, 2^20959596320 is an apocalyptic number.

20959596320 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 20959596320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26890285716).

20959596320 is an abundant number, since it is smaller than the sum of its proper divisors (32820975112).

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

20959596320 is a wasteful number, since it uses less digits than its factorization.

20959596320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 50.

The spelling of 20959596320 in words is "twenty billion, nine hundred fifty-nine million, five hundred ninety-six thousand, three hundred twenty".