6816506392336 has 45 divisors (see below), whose sum is σ = 13338554006421. Its totient is φ = 3374630747136.

The previous prime is 6816506392217. The next prime is 6816506392357. The reversal of 6816506392336 is 6332936056186.

The square root of 6816506392336 is 2610844.

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

It can be written as a sum of positive squares in only one way, i.e., 2380663843600 + 4435842548736 = 1542940^2 + 2106144^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1075664560 + ... + 1075670896.

Almost surely, 2^{6816506392336} is an apocalyptic number.

6816506392336 is the 2610844-th square number.

It is an amenable number.

6816506392336 is a deficient number, since it is larger than the sum of its proper divisors (6522047614085).

6816506392336 is an frugal number, since it uses more digits than its factorization.

6816506392336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12888 (or 6442 counting only the distinct ones).

The product of its (nonzero) digits is 25194240, while the sum is 58.

The spelling of 6816506392336 in words is "six trillion, eight hundred sixteen billion, five hundred six million, three hundred ninety-two thousand, three hundred thirty-six".