20113422665 has 32 divisors (see below), whose sum is σ = 27745113600. Its totient is φ = 13711785984.

The previous prime is 20113422649. The next prime is 20113422751. The reversal of 20113422665 is 56622431102.

It is a cyclic number.

It is not a de Polignac number, because 20113422665 - 2⁴ = 20113422649 is a prime.

It is a Curzon number.

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 31 ways as a sum of consecutive naturals, for example, 5386139 + ... + 5389871.

It is an arithmetic number, because the mean of its divisors is an integer number (867034800).

Almost surely, 2^20113422665 is an apocalyptic number.

It is an amenable number.

20113422665 is a deficient number, since it is larger than the sum of its proper divisors (7631690935).

20113422665 is a wasteful number, since it uses less digits than its factorization.

20113422665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4601.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 20113422665 its reverse (56622431102), we get a palindrome (76735853767).

The spelling of 20113422665 in words is "twenty billion, one hundred thirteen million, four hundred twenty-two thousand, six hundred sixty-five".