20215353435054 has 32 divisors (see below), whose sum is σ = 42561768401280. Its totient is φ = 6383326383072.

The previous prime is 20215353435029. The next prime is 20215353435091. The reversal of 20215353435054 is 45053435351202.

It is a junction number, because it is equal to n+sod(n) for n = 20215353434997 and 20215353435015.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4961292 + ... + 8065055.

It is an arithmetic number, because the mean of its divisors is an integer number (1330055262540).

Almost surely, 2^{20215353435054} is an apocalyptic number.

20215353435054 is an abundant number, since it is smaller than the sum of its proper divisors (22346414966226).

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

20215353435054 is a wasteful number, since it uses less digits than its factorization.

20215353435054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13039984.

The product of its (nonzero) digits is 1080000, while the sum is 42.

Adding to 20215353435054 its reverse (45053435351202), we get a palindrome (65268788786256).

The spelling of 20215353435054 in words is "twenty trillion, two hundred fifteen billion, three hundred fifty-three million, four hundred thirty-five thousand, fifty-four".