243226338877 has 2 divisors, whose sum is σ = 243226338878. Its totient is φ = 243226338876.

The previous prime is 243226338871. The next prime is 243226338919. The reversal of 243226338877 is 778833622342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 239349906756 + 3876432121 = 489234^2 + 62261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243226338877 is a prime.

It is a super-2 number, since 2×243226338877² (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 (243226338871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121613169438 + 121613169439.

It is an arithmetic number, because the mean of its divisors is an integer number (121613169439).

Almost surely, 2^243226338877 is an apocalyptic number.

It is an amenable number.

243226338877 is a deficient number, since it is larger than the sum of its proper divisors (1).

243226338877 is an equidigital number, since it uses as much as digits as its factorization.

243226338877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16257024, while the sum is 55.

The spelling of 243226338877 in words is "two hundred forty-three billion, two hundred twenty-six million, three hundred thirty-eight thousand, eight hundred seventy-seven".