345161721167 has 2 divisors, whose sum is σ = 345161721168. Its totient is φ = 345161721166.

The previous prime is 345161721143. The next prime is 345161721173. The reversal of 345161721167 is 761127161543.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 345161721167 - 2²⁴ = 345144943951 is a prime.

It is a super-2 number, since 2×345161721167² (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 (345161721187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172580860583 + 172580860584.

It is an arithmetic number, because the mean of its divisors is an integer number (172580860584).

Almost surely, 2^345161721167 is an apocalyptic number.

345161721167 is a deficient number, since it is larger than the sum of its proper divisors (1).

345161721167 is an equidigital number, since it uses as much as digits as its factorization.

345161721167 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The spelling of 345161721167 in words is "three hundred forty-five billion, one hundred sixty-one million, seven hundred twenty-one thousand, one hundred sixty-seven".