243003412991 has 2 divisors, whose sum is σ = 243003412992. Its totient is φ = 243003412990.

The previous prime is 243003412979. The next prime is 243003413041. The reversal of 243003412991 is 199214300342.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243003412991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243003412931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121501706495 + 121501706496.

It is an arithmetic number, because the mean of its divisors is an integer number (121501706496).

Almost surely, 2^243003412991 is an apocalyptic number.

243003412991 is a deficient number, since it is larger than the sum of its proper divisors (1).

243003412991 is an equidigital number, since it uses as much as digits as its factorization.

243003412991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 38.

The spelling of 243003412991 in words is "two hundred forty-three billion, three million, four hundred twelve thousand, nine hundred ninety-one".