243054213511 has 2 divisors, whose sum is σ = 243054213512. Its totient is φ = 243054213510.

The previous prime is 243054213497. The next prime is 243054213527. The reversal of 243054213511 is 115312450342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243054213511 - 2³⁷ = 105615260039 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (246054213511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121527106755 + 121527106756.

It is an arithmetic number, because the mean of its divisors is an integer number (121527106756).

Almost surely, 2^243054213511 is an apocalyptic number.

243054213511 is a deficient number, since it is larger than the sum of its proper divisors (1).

243054213511 is an equidigital number, since it uses as much as digits as its factorization.

243054213511 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 14400, while the sum is 31.

Adding to 243054213511 its reverse (115312450342), we get a palindrome (358366663853).

The spelling of 243054213511 in words is "two hundred forty-three billion, fifty-four million, two hundred thirteen thousand, five hundred eleven".