20555210330 has 16 divisors (see below), whose sum is σ = 37010606184. Its totient is φ = 8219589120.

The previous prime is 20555210317. The next prime is 20555210341. The reversal of 20555210330 is 3301255502.

It can be written as a sum of positive squares in 4 ways, for example, as 15296495041 + 5258715289 = 123679^2 + 72517^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20555210330.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 277091 + ... + 343350.

Almost surely, 2^20555210330 is an apocalyptic number.

20555210330 is a deficient number, since it is larger than the sum of its proper divisors (16455395854).

20555210330 is a wasteful number, since it uses less digits than its factorization.

20555210330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623761.

The product of its (nonzero) digits is 4500, while the sum is 26.

Adding to 20555210330 its reverse (3301255502), we get a palindrome (23856465832).

The spelling of 20555210330 in words is "twenty billion, five hundred fifty-five million, two hundred ten thousand, three hundred thirty".