202345145305 has 8 divisors (see below), whose sum is σ = 242846282952. Its totient is φ = 161854710528.

The previous prime is 202345145293. The next prime is 202345145323. The reversal of 202345145305 is 503541543202.

It can be written as a sum of positive squares in 4 ways, for example, as 153974620816 + 48370524489 = 392396^2 + 219933^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 202345145305 - 2³³ = 193755210713 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2634064 + ... + 2709793.

It is an arithmetic number, because the mean of its divisors is an integer number (30355785369).

Almost surely, 2^202345145305 is an apocalyptic number.

It is an amenable number.

202345145305 is a deficient number, since it is larger than the sum of its proper divisors (40501137647).

202345145305 is an equidigital number, since it uses as much as digits as its factorization.

202345145305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5351435.

The product of its (nonzero) digits is 72000, while the sum is 34.

Adding to 202345145305 its reverse (503541543202), we get a palindrome (705886688507).

The spelling of 202345145305 in words is "two hundred two billion, three hundred forty-five million, one hundred forty-five thousand, three hundred five".