22197503845 has 24 divisors (see below), whose sum is σ = 29313696888. Its totient is φ = 16124338560.

The previous prime is 22197503827. The next prime is 22197503879. The reversal of 22197503845 is 54830579122.

It can be written as a sum of positive squares in 4 ways, for example, as 1005714369 + 21191789476 = 31713^2 + 145574^2 .

It is not a de Polignac number, because 22197503845 - 2⁵ = 22197503813 is a prime.

It is a super-3 number, since 3×22197503845³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22197503795 and 22197503804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 494559 + ... + 537571.

It is an arithmetic number, because the mean of its divisors is an integer number (1221404037).

Almost surely, 2^22197503845 is an apocalyptic number.

It is an amenable number.

22197503845 is a deficient number, since it is larger than the sum of its proper divisors (7116193043).

22197503845 is a wasteful number, since it uses less digits than its factorization.

22197503845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43893 (or 43882 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The spelling of 22197503845 in words is "twenty-two billion, one hundred ninety-seven million, five hundred three thousand, eight hundred forty-five".