243112045177 has 2 divisors, whose sum is σ = 243112045178. Its totient is φ = 243112045176.

The previous prime is 243112045151. The next prime is 243112045207. The reversal of 243112045177 is 771540211342.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171276788736 + 71835256441 = 413856^2 + 268021^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-243112045177 is a prime.

It is a super-2 number, since 2×243112045177² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (243112045577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121556022588 + 121556022589.

It is an arithmetic number, because the mean of its divisors is an integer number (121556022589).

Almost surely, 2^243112045177 is an apocalyptic number.

It is an amenable number.

243112045177 is a deficient number, since it is larger than the sum of its proper divisors (1).

243112045177 is an equidigital number, since it uses as much as digits as its factorization.

243112045177 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47040, while the sum is 37.

The spelling of 243112045177 in words is "two hundred forty-three billion, one hundred twelve million, forty-five thousand, one hundred seventy-seven".