243413877943 has 2 divisors, whose sum is σ = 243413877944. Its totient is φ = 243413877942.

The previous prime is 243413877929. The next prime is 243413878039. The reversal of 243413877943 is 349778314342.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 243413877943 - 2⁵ = 243413877911 is a prime.

It is a super-2 number, since 2×243413877943² (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 (243413877923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121706938971 + 121706938972.

It is an arithmetic number, because the mean of its divisors is an integer number (121706938972).

Almost surely, 2^243413877943 is an apocalyptic number.

243413877943 is a deficient number, since it is larger than the sum of its proper divisors (1).

243413877943 is an equidigital number, since it uses as much as digits as its factorization.

243413877943 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 55.

The spelling of 243413877943 in words is "two hundred forty-three billion, four hundred thirteen million, eight hundred seventy-seven thousand, nine hundred forty-three".