145164215305 has 8 divisors (see below), whose sum is σ = 174331373832. Its totient is φ = 116041828608.

The previous prime is 145164215299. The next prime is 145164215309. The reversal of 145164215305 is 503512461541.

It can be written as a sum of positive squares in 4 ways, for example, as 44999561161 + 100164654144 = 212131^2 + 316488^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145164215305 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145164215309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11185822 + ... + 11198791.

It is an arithmetic number, because the mean of its divisors is an integer number (21791421729).

Almost surely, 2^145164215305 is an apocalyptic number.

It is an amenable number.

145164215305 is a deficient number, since it is larger than the sum of its proper divisors (29167158527).

145164215305 is a wasteful number, since it uses less digits than its factorization.

145164215305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22385915.

The product of its (nonzero) digits is 72000, while the sum is 37.

Adding to 145164215305 its reverse (503512461541), we get a palindrome (648676676846).

The spelling of 145164215305 in words is "one hundred forty-five billion, one hundred sixty-four million, two hundred fifteen thousand, three hundred five".