22065542738 has 6 divisors (see below), whose sum is σ = 33098629221. Its totient is φ = 11032666332.

The previous prime is 22065542711. The next prime is 22065542747. The reversal of 22065542738 is 83724556022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 14353717249 + 7711825489 = 119807^2 + 87817^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=105037.

It is a Duffinian number.

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 2 ways as a sum of consecutive naturals, for example, 157556 + ... + 262592.

Almost surely, 2^22065542738 is an apocalyptic number.

22065542738 is a deficient number, since it is larger than the sum of its proper divisors (11033086483).

22065542738 is an frugal number, since it uses more digits than its factorization.

22065542738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210076 (or 105039 counting only the distinct ones).

The product of its (nonzero) digits is 806400, while the sum is 44.

The spelling of 22065542738 in words is "twenty-two billion, sixty-five million, five hundred forty-two thousand, seven hundred thirty-eight".