22015606345 has 4 divisors (see below), whose sum is σ = 26418727620. Its totient is φ = 17612485072.

The previous prime is 22015606259. The next prime is 22015606363. The reversal of 22015606345 is 54360651022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54360651022 = 2 ⋅27180325511.

It can be written as a sum of positive squares in 2 ways, for example, as 11128562064 + 10887044281 = 105492^2 + 104341^2 .

It is a cyclic number.

It is not a de Polignac number, because 22015606345 - 2¹¹ = 22015604297 is a prime.

It is a super-4 number, since 4×22015606345⁴ (a number of 42 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22015606345.

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 3 ways as a sum of consecutive naturals, for example, 2201560630 + ... + 2201560639.

It is an arithmetic number, because the mean of its divisors is an integer number (6604681905).

Almost surely, 2^22015606345 is an apocalyptic number.

It is an amenable number.

22015606345 is a deficient number, since it is larger than the sum of its proper divisors (4403121275).

22015606345 is an equidigital number, since it uses as much as digits as its factorization.

22015606345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4403121274.

The product of its (nonzero) digits is 43200, while the sum is 34.

The spelling of 22015606345 in words is "twenty-two billion, fifteen million, six hundred six thousand, three hundred forty-five".