243958959157 has 2 divisors, whose sum is σ = 243958959158. Its totient is φ = 243958959156.

The previous prime is 243958959107. The next prime is 243958959173. The reversal of 243958959157 is 751959859342.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 227863977201 + 16094981956 = 477351^2 + 126866^2 .

It is a cyclic number.

It is not a de Polignac number, because 243958959157 - 2⁷ = 243958959029 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 243958959092 and 243958959101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (243958959107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 121979479578 + 121979479579.

It is an arithmetic number, because the mean of its divisors is an integer number (121979479579).

Almost surely, 2^243958959157 is an apocalyptic number.

It is an amenable number.

243958959157 is a deficient number, since it is larger than the sum of its proper divisors (1).

243958959157 is an equidigital number, since it uses as much as digits as its factorization.

243958959157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472000, while the sum is 67.

The spelling of 243958959157 in words is "two hundred forty-three billion, nine hundred fifty-eight million, nine hundred fifty-nine thousand, one hundred fifty-seven".