20215445510053 has 4 divisors (see below), whose sum is σ = 20215556998560. Its totient is φ = 20215334021548.

The previous prime is 20215445510021. The next prime is 20215445510093. The reversal of 20215445510053 is 35001554451202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20215445510053 - 2⁵ = 20215445510021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20215445509994 and 20215445510021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215445510003) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 55471825 + ... + 55835062.

It is an arithmetic number, because the mean of its divisors is an integer number (5053889249640).

Almost surely, 2^{20215445510053} is an apocalyptic number.

It is an amenable number.

20215445510053 is a deficient number, since it is larger than the sum of its proper divisors (111488507).

20215445510053 is a wasteful number, since it uses less digits than its factorization.

20215445510053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111488506.

The product of its (nonzero) digits is 120000, while the sum is 37.

Adding to 20215445510053 its reverse (35001554451202), we get a palindrome (55216999961255).

The spelling of 20215445510053 in words is "twenty trillion, two hundred fifteen billion, four hundred forty-five million, five hundred ten thousand, fifty-three".