123053257889 has 2 divisors, whose sum is σ = 123053257890. Its totient is φ = 123053257888.

The previous prime is 123053257849. The next prime is 123053257909. The reversal of 123053257889 is 988752350321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70978017889 + 52075240000 = 266417^2 + 228200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123053257889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123053257889.

It is not a weakly prime, because it can be changed into another prime (123053257819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61526628944 + 61526628945.

It is an arithmetic number, because the mean of its divisors is an integer number (61526628945).

Almost surely, 2^123053257889 is an apocalyptic number.

It is an amenable number.

123053257889 is a deficient number, since it is larger than the sum of its proper divisors (1).

123053257889 is an equidigital number, since it uses as much as digits as its factorization.

123053257889 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3628800, while the sum is 53.

The spelling of 123053257889 in words is "one hundred twenty-three billion, fifty-three million, two hundred fifty-seven thousand, eight hundred eighty-nine".