22399073993 has 4 divisors (see below), whose sum is σ = 22447662468. Its totient is φ = 22350485520.

The previous prime is 22399073981. The next prime is 22399074007. The reversal of 22399073993 is 39937099322.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 39937099322 = 2 ⋅19968549661.

It can be written as a sum of positive squares in 2 ways, for example, as 3562060489 + 18837013504 = 59683^2 + 137248^2 .

It is a cyclic number.

It is not a de Polignac number, because 22399073993 - 2⁶ = 22399073929 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22399073093) 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, 24293546 + ... + 24294467.

It is an arithmetic number, because the mean of its divisors is an integer number (5611915617).

Almost surely, 2^22399073993 is an apocalyptic number.

It is an amenable number.

22399073993 is a deficient number, since it is larger than the sum of its proper divisors (48588475).

22399073993 is an equidigital number, since it uses as much as digits as its factorization.

22399073993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48588474.

The product of its (nonzero) digits is 4960116, while the sum is 56.

The spelling of 22399073993 in words is "twenty-two billion, three hundred ninety-nine million, seventy-three thousand, nine hundred ninety-three".