345608165281 has 2 divisors, whose sum is σ = 345608165282. Its totient is φ = 345608165280.

The previous prime is 345608165261. The next prime is 345608165321. The reversal of 345608165281 is 182561806543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 335084688225 + 10523477056 = 578865^2 + 102584^2 .

It is an emirp because it is prime and its reverse (182561806543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345608165281 - 2³¹ = 343460681633 is a prime.

It is a super-2 number, since 2×345608165281² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345608165261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172804082640 + 172804082641.

It is an arithmetic number, because the mean of its divisors is an integer number (172804082641).

Almost surely, 2^345608165281 is an apocalyptic number.

It is an amenable number.

345608165281 is a deficient number, since it is larger than the sum of its proper divisors (1).

345608165281 is an equidigital number, since it uses as much as digits as its factorization.

345608165281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1382400, while the sum is 49.

The spelling of 345608165281 in words is "three hundred forty-five billion, six hundred eight million, one hundred sixty-five thousand, two hundred eighty-one".