20559896322 has 64 divisors (see below), whose sum is σ = 51363569664. Its totient is φ = 5350360320.

The previous prime is 20559896179. The next prime is 20559896323. The reversal of 20559896322 is 22369895502.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (20559896323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442308 + ... + 486575.

It is an arithmetic number, because the mean of its divisors is an integer number (802555776).

Almost surely, 2^20559896322 is an apocalyptic number.

20559896322 is an abundant number, since it is smaller than the sum of its proper divisors (30803673342).

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

20559896322 is a wasteful number, since it uses less digits than its factorization.

20559896322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 928943.

The product of its (nonzero) digits is 2332800, while the sum is 51.

The spelling of 20559896322 in words is "twenty billion, five hundred fifty-nine million, eight hundred ninety-six thousand, three hundred twenty-two".