20355103213353 has 12 divisors (see below), whose sum is σ = 30118933210548. Its totient is φ = 13239091520640.

The previous prime is 20355103213327. The next prime is 20355103213369. The reversal of 20355103213353 is 35331230155302.

It is a happy number.

20355103213353 is a `hidden beast` number, since 2 + 0 + 3 + 5 + 510 + 3 + 2 + 133 + 5 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 826057401129 + 19529045812224 = 908877^2 + 4419168^2 .

It is not a de Polignac number, because 20355103213353 - 2⁵ = 20355103213321 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20355103213553) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 27581440300 + ... + 27581441037.

It is an arithmetic number, because the mean of its divisors is an integer number (2509911100879).

Almost surely, 2^{20355103213353} is an apocalyptic number.

It is an amenable number.

20355103213353 is a deficient number, since it is larger than the sum of its proper divisors (9763829997195).

20355103213353 is a wasteful number, since it uses less digits than its factorization.

20355103213353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55162881384 (or 55162881381 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 36.

Adding to 20355103213353 its reverse (35331230155302), we get a palindrome (55686333368655).

The spelling of 20355103213353 in words is "twenty trillion, three hundred fifty-five billion, one hundred three million, two hundred thirteen thousand, three hundred fifty-three".