340398717569 has 2 divisors, whose sum is σ = 340398717570. Its totient is φ = 340398717568.

The previous prime is 340398717559. The next prime is 340398717599. The reversal of 340398717569 is 965717893043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 306542717569 + 33856000000 = 553663^2 + 184000^2 .

It is an emirp because it is prime and its reverse (965717893043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340398717569 - 2⁴ = 340398717553 is a prime.

It is a super-2 number, since 2×340398717569² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (340398717509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170199358784 + 170199358785.

It is an arithmetic number, because the mean of its divisors is an integer number (170199358785).

Almost surely, 2^340398717569 is an apocalyptic number.

It is an amenable number.

340398717569 is a deficient number, since it is larger than the sum of its proper divisors (1).

340398717569 is an equidigital number, since it uses as much as digits as its factorization.

340398717569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 340398717569 in words is "three hundred forty billion, three hundred ninety-eight million, seven hundred seventeen thousand, five hundred sixty-nine".