20005210215323 has 4 divisors (see below), whose sum is σ = 20005772684760. Its totient is φ = 20004647745888.

The previous prime is 20005210215299. The next prime is 20005210215329. The reversal of 20005210215323 is 32351201250002.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20005210215323 - 2²⁴ = 20005193438107 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20005210215292 and 20005210215301.

It is not an unprimeable number, because it can be changed into a prime (20005210215329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 281181365 + ... + 281252502.

It is an arithmetic number, because the mean of its divisors is an integer number (5001443171190).

Almost surely, 2^{20005210215323} is an apocalyptic number.

20005210215323 is a deficient number, since it is larger than the sum of its proper divisors (562469437).

20005210215323 is an equidigital number, since it uses as much as digits as its factorization.

20005210215323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562469436.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 20005210215323 its reverse (32351201250002), we get a palindrome (52356411465325).

The spelling of 20005210215323 in words is "twenty trillion, five billion, two hundred ten million, two hundred fifteen thousand, three hundred twenty-three".