243154532263 has 2 divisors, whose sum is σ = 243154532264. Its totient is φ = 243154532262.

The previous prime is 243154532213. The next prime is 243154532279. The reversal of 243154532263 is 362235451342.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 243154532263 - 2²¹ = 243152435111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243154532213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121577266131 + 121577266132.

It is an arithmetic number, because the mean of its divisors is an integer number (121577266132).

Almost surely, 2^243154532263 is an apocalyptic number.

243154532263 is a deficient number, since it is larger than the sum of its proper divisors (1).

243154532263 is an equidigital number, since it uses as much as digits as its factorization.

243154532263 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 40.

The spelling of 243154532263 in words is "two hundred forty-three billion, one hundred fifty-four million, five hundred thirty-two thousand, two hundred sixty-three".