3278913343729 has 9 divisors (see below), whose sum is σ = 3285483289753. Its totient is φ = 3272356520212.

The previous prime is 3278913343711. The next prime is 3278913343733. The reversal of 3278913343729 is 9273433198723.

The square root of 3278913343729 is 1810777.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 3278913343729 - 2²¹ = 3278911246577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3278913346729) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1084653912 + ... + 1084656934.

Almost surely, 2^{3278913343729} is an apocalyptic number.

3278913343729 is the 1810777-th square number.

3278913343729 is the 905389-th centered octagonal number.

It is an amenable number.

3278913343729 is a deficient number, since it is larger than the sum of its proper divisors (6569946024).

3278913343729 is an frugal number, since it uses more digits than its factorization.

3278913343729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7244 (or 3622 counting only the distinct ones).

The product of its digits is 41150592, while the sum is 61.

The spelling of 3278913343729 in words is "three trillion, two hundred seventy-eight billion, nine hundred thirteen million, three hundred forty-three thousand, seven hundred twenty-nine".