349045666549 has 4 divisors (see below), whose sum is σ = 349634277036. Its totient is φ = 348457056064.

The previous prime is 349045666523. The next prime is 349045666577. The reversal of 349045666549 is 945666540943.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 945666540943 = 29 ⋅32609191067.

It can be written as a sum of positive squares in 2 ways, for example, as 208912984900 + 140132681649 = 457070^2 + 374343^2 .

It is a cyclic number.

It is not a de Polignac number, because 349045666549 - 2⁹ = 349045666037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349045666049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 294304354 + ... + 294305539.

It is an arithmetic number, because the mean of its divisors is an integer number (87408569259).

Almost surely, 2^349045666549 is an apocalyptic number.

It is an amenable number.

349045666549 is a deficient number, since it is larger than the sum of its proper divisors (588610487).

349045666549 is an equidigital number, since it uses as much as digits as its factorization.

349045666549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588610486.

The product of its (nonzero) digits is 83980800, while the sum is 61.

The spelling of 349045666549 in words is "three hundred forty-nine billion, forty-five million, six hundred sixty-six thousand, five hundred forty-nine".