349555478709 has 16 divisors (see below), whose sum is σ = 466405513344. Its totient is φ = 232871284800.

The previous prime is 349555478639. The next prime is 349555478719. The reversal of 349555478709 is 907874555943.

It is a happy number.

It is not a de Polignac number, because 349555478709 - 2⁸ = 349555478453 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 349555478709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349555478719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32417899 + ... + 32428679.

It is an arithmetic number, because the mean of its divisors is an integer number (29150344584).

Almost surely, 2^349555478709 is an apocalyptic number.

It is an amenable number.

349555478709 is a deficient number, since it is larger than the sum of its proper divisors (116850034635).

349555478709 is a wasteful number, since it uses less digits than its factorization.

349555478709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17468.

The product of its (nonzero) digits is 190512000, while the sum is 66.

The spelling of 349555478709 in words is "three hundred forty-nine billion, five hundred fifty-five million, four hundred seventy-eight thousand, seven hundred nine".