297128385901 has 2 divisors, whose sum is σ = 297128385902. Its totient is φ = 297128385900.

The previous prime is 297128385877. The next prime is 297128385913. The reversal of 297128385901 is 109583821792.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192234018025 + 104894367876 = 438445^2 + 323874^2 .

It is a cyclic number.

It is not a de Polignac number, because 297128385901 - 2¹⁵ = 297128353133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (297128385941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 148564192950 + 148564192951.

It is an arithmetic number, because the mean of its divisors is an integer number (148564192951).

Almost surely, 2^297128385901 is an apocalyptic number.

It is an amenable number.

297128385901 is a deficient number, since it is larger than the sum of its proper divisors (1).

297128385901 is an equidigital number, since it uses as much as digits as its factorization.

297128385901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 55.

The spelling of 297128385901 in words is "two hundred ninety-seven billion, one hundred twenty-eight million, three hundred eighty-five thousand, nine hundred one".