349144559592778 has 4 divisors (see below), whose sum is σ = 523716839389170. Its totient is φ = 174572279796388.

The previous prime is 349144559592733. The next prime is 349144559592791. The reversal of 349144559592778 is 877295955441943.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 223493619788209 + 125650939804569 = 14949703^2 + 11209413^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87286139898193 + ... + 87286139898196.

Almost surely, 2^{349144559592778} is an apocalyptic number.

349144559592778 is a deficient number, since it is larger than the sum of its proper divisors (174572279796392).

349144559592778 is a wasteful number, since it uses less digits than its factorization.

349144559592778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174572279796391.

The product of its digits is 13716864000, while the sum is 82.

The spelling of 349144559592778 in words is "three hundred forty-nine trillion, one hundred forty-four billion, five hundred fifty-nine million, five hundred ninety-two thousand, seven hundred seventy-eight".