22061644165345 has 8 divisors (see below), whose sum is σ = 26474268318120. Its totient is φ = 17649118452480.

The previous prime is 22061644165307. The next prime is 22061644165397. The reversal of 22061644165345 is 54356144616022.

It can be written as a sum of positive squares in 4 ways, for example, as 7258018553041 + 14803625612304 = 2694071^2 + 3847548^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22061644165345 - 2³¹ = 22059496681697 is a prime.

It is a super-2 number, since 2×22061644165345² (a number of 27 digits) contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 24116026 + ... + 25014115.

It is an arithmetic number, because the mean of its divisors is an integer number (3309283539765).

Almost surely, 2^{22061644165345} is an apocalyptic number.

It is an amenable number.

22061644165345 is a deficient number, since it is larger than the sum of its proper divisors (4412624152775).

22061644165345 is an equidigital number, since it uses as much as digits as its factorization.

22061644165345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49219955.

The product of its (nonzero) digits is 4147200, while the sum is 49.

The spelling of 22061644165345 in words is "twenty-two trillion, sixty-one billion, six hundred forty-four million, one hundred sixty-five thousand, three hundred forty-five".