243364677043139 has 2 divisors, whose sum is σ = 243364677043140. Its totient is φ = 243364677043138.

The previous prime is 243364677043109. The next prime is 243364677043199. The reversal of 243364677043139 is 931340776463342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243364677043139 - 2¹⁶ = 243364676977603 is a prime.

It is a super-2 number, since 2×243364677043139² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243364677043109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121682338521569 + 121682338521570.

It is an arithmetic number, because the mean of its divisors is an integer number (121682338521570).

Almost surely, 2^{243364677043139} is an apocalyptic number.

243364677043139 is a deficient number, since it is larger than the sum of its proper divisors (1).

243364677043139 is an equidigital number, since it uses as much as digits as its factorization.

243364677043139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 164602368, while the sum is 62.

The spelling of 243364677043139 in words is "two hundred forty-three trillion, three hundred sixty-four billion, six hundred seventy-seven million, forty-three thousand, one hundred thirty-nine".