20367234065 has 4 divisors (see below), whose sum is σ = 24440680884. Its totient is φ = 16293787248.

The previous prime is 20367234061. The next prime is 20367234067. The reversal of 20367234065 is 56043276302.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 5946106321 + 14421127744 = 77111^2 + 120088^2 .

It is a cyclic number.

It is not a de Polignac number, because 20367234065 - 2² = 20367234061 is a prime.

It is a super-3 number, since 3×20367234065³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20367234061) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 2036723402 + ... + 2036723411.

It is an arithmetic number, because the mean of its divisors is an integer number (6110170221).

Almost surely, 2^20367234065 is an apocalyptic number.

It is an amenable number.

20367234065 is a deficient number, since it is larger than the sum of its proper divisors (4073446819).

20367234065 is an equidigital number, since it uses as much as digits as its factorization.

20367234065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073446818.

The product of its (nonzero) digits is 181440, while the sum is 38.

The spelling of 20367234065 in words is "twenty billion, three hundred sixty-seven million, two hundred thirty-four thousand, sixty-five".