243135363589 has 2 divisors, whose sum is σ = 243135363590. Its totient is φ = 243135363588.

The previous prime is 243135363547. The next prime is 243135363593. The reversal of 243135363589 is 985363531342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 240090200100 + 3045163489 = 489990^2 + 55183^2 .

It is a cyclic number.

It is not a de Polignac number, because 243135363589 - 2⁷ = 243135363461 is a prime.

It is a super-2 number, since 2×243135363589² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243135363509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121567681794 + 121567681795.

It is an arithmetic number, because the mean of its divisors is an integer number (121567681795).

Almost surely, 2^243135363589 is an apocalyptic number.

It is an amenable number.

243135363589 is a deficient number, since it is larger than the sum of its proper divisors (1).

243135363589 is an equidigital number, since it uses as much as digits as its factorization.

243135363589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 52.

It can be divided in two parts, 2431353 and 63589, that added together give a palindrome (2494942).

The spelling of 243135363589 in words is "two hundred forty-three billion, one hundred thirty-five million, three hundred sixty-three thousand, five hundred eighty-nine".