20322535665 has 16 divisors (see below), whose sum is σ = 32536456128. Its totient is φ = 10831886016.

The previous prime is 20322535637. The next prime is 20322535711. The reversal of 20322535665 is 56653522302.

It is not a de Polignac number, because 20322535665 - 2⁷ = 20322535537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 400227 + ... + 448136.

It is an arithmetic number, because the mean of its divisors is an integer number (2033528508).

Almost surely, 2^20322535665 is an apocalyptic number.

It is an amenable number.

20322535665 is a deficient number, since it is larger than the sum of its proper divisors (12213920463).

20322535665 is a wasteful number, since it uses less digits than its factorization.

20322535665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849968.

The product of its (nonzero) digits is 324000, while the sum is 39.

The spelling of 20322535665 in words is "twenty billion, three hundred twenty-two million, five hundred thirty-five thousand, six hundred sixty-five".