345084632861 has 2 divisors, whose sum is σ = 345084632862. Its totient is φ = 345084632860.

The previous prime is 345084632839. The next prime is 345084632887. The reversal of 345084632861 is 168236480543.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178768296100 + 166316336761 = 422810^2 + 407819^2 .

It is an emirp because it is prime and its reverse (168236480543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345084632861 - 2¹⁸ = 345084370717 is a prime.

It is a super-2 number, since 2×345084632861² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345084632161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172542316430 + 172542316431.

It is an arithmetic number, because the mean of its divisors is an integer number (172542316431).

Almost surely, 2^345084632861 is an apocalyptic number.

It is an amenable number.

345084632861 is a deficient number, since it is larger than the sum of its proper divisors (1).

345084632861 is an equidigital number, since it uses as much as digits as its factorization.

345084632861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3317760, while the sum is 50.

The spelling of 345084632861 in words is "three hundred forty-five billion, eighty-four million, six hundred thirty-two thousand, eight hundred sixty-one".