3206778399504 has 135 divisors (see below), whose sum is σ = 9320912666247. Its totient is φ = 1068732732384.

The previous prime is 3206778399467. The next prime is 3206778399527. The reversal of 3206778399504 is 4059938776023.

The square root of 3206778399504 is 1790748.

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

3206778399504 is a `hidden beast` number, since 3 + 20 + 6 + 7 + 78 + 39 + 9 + 504 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 580199589 + ... + 580205115.

Almost surely, 2^{3206778399504} is an apocalyptic number.

3206778399504 is the 1790748-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3206778399504

3206778399504 is an abundant number, since it is smaller than the sum of its proper divisors (6114134266743).

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

3206778399504 is an frugal number, since it uses more digits than its factorization.

3206778399504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11086 (or 5532 counting only the distinct ones).

The product of its (nonzero) digits is 68584320, while the sum is 63.

The spelling of 3206778399504 in words is "three trillion, two hundred six billion, seven hundred seventy-eight million, three hundred ninety-nine thousand, five hundred four".