349262069856 has 144 divisors (see below), whose sum is σ = 1066886904384. Its totient is φ = 99752653056.

The previous prime is 349262069851. The next prime is 349262069867. The reversal of 349262069856 is 658960262943.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 349262069856.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349262069851) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14490391 + ... + 14514473.

It is an arithmetic number, because the mean of its divisors is an integer number (7408936836).

Almost surely, 2^349262069856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 349262069856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (533443452192).

349262069856 is an abundant number, since it is smaller than the sum of its proper divisors (717624834528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

349262069856 is a wasteful number, since it uses less digits than its factorization.

349262069856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27193 (or 27178 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 60.

The spelling of 349262069856 in words is "three hundred forty-nine billion, two hundred sixty-two million, sixty-nine thousand, eight hundred fifty-six".