346729071217 has 2 divisors, whose sum is σ = 346729071218. Its totient is φ = 346729071216.

The previous prime is 346729071211. The next prime is 346729071307. The reversal of 346729071217 is 712170927643.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 275033118096 + 71695953121 = 524436^2 + 267761^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346729071217 is a prime.

It is a super-2 number, since 2×346729071217² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (346729071211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173364535608 + 173364535609.

It is an arithmetic number, because the mean of its divisors is an integer number (173364535609).

Almost surely, 2^346729071217 is an apocalyptic number.

It is an amenable number.

346729071217 is a deficient number, since it is larger than the sum of its proper divisors (1).

346729071217 is an equidigital number, since it uses as much as digits as its factorization.

346729071217 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 889056, while the sum is 49.

The spelling of 346729071217 in words is "three hundred forty-six billion, seven hundred twenty-nine million, seventy-one thousand, two hundred seventeen".