12822391696 has 15 divisors (see below), whose sum is σ = 24844261521. Its totient is φ = 6410969376.

The previous prime is 12822391679. The next prime is 12822391711. The reversal of 12822391696 is 69619322821.

The square root of 12822391696 is 113236.

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., 5481329296 + 7341062400 = 74036^2 + 85680^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 438790 + ... + 467098.

Almost surely, 2^12822391696 is an apocalyptic number.

12822391696 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

12822391696 is the 113236-th square number.

It is an amenable number.

12822391696 is a deficient number, since it is larger than the sum of its proper divisors (12021869825).

12822391696 is an frugal number, since it uses more digits than its factorization.

12822391696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56626 (or 28311 counting only the distinct ones).

The product of its digits is 559872, while the sum is 49.

Multiplying 12822391696 by its sum of digits (49), we get a square (628297193104 = 792652²).

It can be divided in two parts, 128 and 22391696, that added together give a square (22391824 = 4732²).

The spelling of 12822391696 in words is "twelve billion, eight hundred twenty-two million, three hundred ninety-one thousand, six hundred ninety-six".