243241025195 has 72 divisors (see below), whose sum is σ = 346051895616. Its totient is φ = 163638752256.

The previous prime is 243241025117. The next prime is 243241025233. The reversal of 243241025195 is 591520142342.

It is a de Polignac number, because none of the positive numbers 2^k-243241025195 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 662781902 + ... + 662782268.

It is an arithmetic number, because the mean of its divisors is an integer number (4806276328).

Almost surely, 2^243241025195 is an apocalyptic number.

243241025195 is a deficient number, since it is larger than the sum of its proper divisors (102810870421).

243241025195 is an equidigital number, since it uses as much as digits as its factorization.

243241025195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 817 (or 643 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 243241025195 in words is "two hundred forty-three billion, two hundred forty-one million, twenty-five thousand, one hundred ninety-five".