22789498723 has 4 divisors (see below), whose sum is σ = 22800732640. Its totient is φ = 22778264808.

The previous prime is 22789498717. The next prime is 22789498727. The reversal of 22789498723 is 32789498722.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22789498723 is a prime.

It is a super-4 number, since 4×22789498723⁴ (a number of 43 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22789498727) 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, 5613915 + ... + 5617972.

It is an arithmetic number, because the mean of its divisors is an integer number (5700183160).

Almost surely, 2^22789498723 is an apocalyptic number.

22789498723 is a deficient number, since it is larger than the sum of its proper divisors (11233917).

22789498723 is a wasteful number, since it uses less digits than its factorization.

22789498723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11233916.

The product of its digits is 24385536, while the sum is 61.

Subtracting 22789498723 from its reverse (32789498722), we obtain a palindrome (9999999999).

The spelling of 22789498723 in words is "twenty-two billion, seven hundred eighty-nine million, four hundred ninety-eight thousand, seven hundred twenty-three".