1245713224165 has 8 divisors (see below), whose sum is σ = 1519361703288. Its totient is φ = 980233356480.

The previous prime is 1245713224123. The next prime is 1245713224243. The reversal of 1245713224165 is 5614223175421.

It can be written as a sum of positive squares in 4 ways, for example, as 10561056289 + 1235152167876 = 102767^2 + 1111374^2 .

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

It is not a de Polignac number, because 1245713224165 - 2⁷ = 1245713224037 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2042152522 + ... + 2042153131.

It is an arithmetic number, because the mean of its divisors is an integer number (189920212911).

Almost surely, 2^{1245713224165} is an apocalyptic number.

It is an amenable number.

1245713224165 is a deficient number, since it is larger than the sum of its proper divisors (273648479123).

1245713224165 is an equidigital number, since it uses as much as digits as its factorization.

1245713224165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084305719.

The product of its digits is 403200, while the sum is 43.

Adding to 1245713224165 its reverse (5614223175421), we get a palindrome (6859936399586).

The spelling of 1245713224165 in words is "one trillion, two hundred forty-five billion, seven hundred thirteen million, two hundred twenty-four thousand, one hundred sixty-five".