243245510245 has 4 divisors (see below), whose sum is σ = 291894612300. Its totient is φ = 194596408192.

The previous prime is 243245510239. The next prime is 243245510257. The reversal of 243245510245 is 542015542342.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542015542342 = 2 ⋅271007771171.

It can be written as a sum of positive squares in 2 ways, for example, as 95751875844 + 147493634401 = 309438^2 + 384049^2 .

It is a cyclic number.

It is not a de Polignac number, because 243245510245 - 2⁵ = 243245510213 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24324551020 + ... + 24324551029.

It is an arithmetic number, because the mean of its divisors is an integer number (72973653075).

Almost surely, 2^243245510245 is an apocalyptic number.

It is an amenable number.

243245510245 is a deficient number, since it is larger than the sum of its proper divisors (48649102055).

243245510245 is an equidigital number, since it uses as much as digits as its factorization.

243245510245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48649102054.

The product of its (nonzero) digits is 192000, while the sum is 37.

The spelling of 243245510245 in words is "two hundred forty-three billion, two hundred forty-five million, five hundred ten thousand, two hundred forty-five".