259616447969 has 2 divisors, whose sum is σ = 259616447970. Its totient is φ = 259616447968.

The previous prime is 259616447947. The next prime is 259616448041. The reversal of 259616447969 is 969744616952.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 189497407969 + 70119040000 = 435313^2 + 264800^2 .

It is a cyclic number.

It is not a de Polignac number, because 259616447969 - 2¹² = 259616443873 is a prime.

It is a super-2 number, since 2×259616447969² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 259616447899 and 259616447908.

It is not a weakly prime, because it can be changed into another prime (259616447939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 129808223984 + 129808223985.

It is an arithmetic number, because the mean of its divisors is an integer number (129808223985).

Almost surely, 2^259616447969 is an apocalyptic number.

It is an amenable number.

259616447969 is a deficient number, since it is larger than the sum of its proper divisors (1).

259616447969 is an equidigital number, since it uses as much as digits as its factorization.

259616447969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 176359680, while the sum is 68.

The spelling of 259616447969 in words is "two hundred fifty-nine billion, six hundred sixteen million, four hundred forty-seven thousand, nine hundred sixty-nine".