245323204397 has 2 divisors, whose sum is σ = 245323204398. Its totient is φ = 245323204396.

The previous prime is 245323204339. The next prime is 245323204421. The reversal of 245323204397 is 793402323542.

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., 141209856841 + 104113347556 = 375779^2 + 322666^2 .

It is a cyclic number.

It is not a de Polignac number, because 245323204397 - 2²⁴ = 245306427181 is a prime.

It is a super-3 number, since 3×245323204397³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245323204307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122661602198 + 122661602199.

It is an arithmetic number, because the mean of its divisors is an integer number (122661602199).

Almost surely, 2^245323204397 is an apocalyptic number.

It is an amenable number.

245323204397 is a deficient number, since it is larger than the sum of its proper divisors (1).

245323204397 is an equidigital number, since it uses as much as digits as its factorization.

245323204397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 44.

The spelling of 245323204397 in words is "two hundred forty-five billion, three hundred twenty-three million, two hundred four thousand, three hundred ninety-seven".