243055413077 has 2 divisors, whose sum is σ = 243055413078. Its totient is φ = 243055413076.

The previous prime is 243055413061. The next prime is 243055413127. The reversal of 243055413077 is 770314550342.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 188107833796 + 54947579281 = 433714^2 + 234409^2 .

It is a cyclic number.

It is not a de Polignac number, because 243055413077 - 2⁴ = 243055413061 is a prime.

It is a super-2 number, since 2×243055413077² (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 (243055413277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121527706538 + 121527706539.

It is an arithmetic number, because the mean of its divisors is an integer number (121527706539).

Almost surely, 2^243055413077 is an apocalyptic number.

It is an amenable number.

243055413077 is a deficient number, since it is larger than the sum of its proper divisors (1).

243055413077 is an equidigital number, since it uses as much as digits as its factorization.

243055413077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 41.

The spelling of 243055413077 in words is "two hundred forty-three billion, fifty-five million, four hundred thirteen thousand, seventy-seven".