20321215035 has 16 divisors (see below), whose sum is σ = 35469757440. Its totient is φ = 9852710240.

The previous prime is 20321215021. The next prime is 20321215043. The reversal of 20321215035 is 53051212302.

It is a happy number.

It is not a de Polignac number, because 20321215035 - 2⁹ = 20321214523 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20321214996 and 20321215014.

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 15 ways as a sum of consecutive naturals, for example, 61579275 + ... + 61579604.

It is an arithmetic number, because the mean of its divisors is an integer number (2216859840).

Almost surely, 2^20321215035 is an apocalyptic number.

20321215035 is a deficient number, since it is larger than the sum of its proper divisors (15148542405).

20321215035 is a wasteful number, since it uses less digits than its factorization.

20321215035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123158898.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 20321215035 its reverse (53051212302), we get a palindrome (73372427337).

The spelling of 20321215035 in words is "twenty billion, three hundred twenty-one million, two hundred fifteen thousand, thirty-five".