22765645159 has 4 divisors (see below), whose sum is σ = 23380932904. Its totient is φ = 22150357416.

The previous prime is 22765645151. The next prime is 22765645193. The reversal of 22765645159 is 95154656722.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 95154656722 = 2 ⋅47577328361.

It is a cyclic number.

It is not a de Polignac number, because 22765645159 - 2³ = 22765645151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22765645151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307643817 + ... + 307643890.

It is an arithmetic number, because the mean of its divisors is an integer number (5845233226).

Almost surely, 2^22765645159 is an apocalyptic number.

22765645159 is a deficient number, since it is larger than the sum of its proper divisors (615287745).

22765645159 is an equidigital number, since it uses as much as digits as its factorization.

22765645159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615287744.

The product of its digits is 4536000, while the sum is 52.

The spelling of 22765645159 in words is "twenty-two billion, seven hundred sixty-five million, six hundred forty-five thousand, one hundred fifty-nine".