22765047639 has 4 divisors (see below), whose sum is σ = 30353396856. Its totient is φ = 15176698424.

The previous prime is 22765047637. The next prime is 22765047673. The reversal of 22765047639 is 93674056722.

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

It is a cyclic number.

It is not a de Polignac number, because 22765047639 - 2¹ = 22765047637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22765047591 and 22765047600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22765047637) 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, 3794174604 + ... + 3794174609.

It is an arithmetic number, because the mean of its divisors is an integer number (7588349214).

Almost surely, 2^22765047639 is an apocalyptic number.

22765047639 is a deficient number, since it is larger than the sum of its proper divisors (7588349217).

22765047639 is an equidigital number, since it uses as much as digits as its factorization.

22765047639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7588349216.

The product of its (nonzero) digits is 3810240, while the sum is 51.

The spelling of 22765047639 in words is "twenty-two billion, seven hundred sixty-five million, forty-seven thousand, six hundred thirty-nine".