1316646041321 has 8 divisors (see below), whose sum is σ = 1452510079944. Its totient is φ = 1185722513280.

The previous prime is 1316646041303. The next prime is 1316646041323. The reversal of 1316646041321 is 1231406466131.

It can be written as a sum of positive squares in 4 ways, for example, as 151584856921 + 1165061184400 = 389339^2 + 1079380^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1316646041321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1316646041323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1235127086 + ... + 1235128151.

It is an arithmetic number, because the mean of its divisors is an integer number (181563759993).

Almost surely, 2^{1316646041321} is an apocalyptic number.

It is an amenable number.

1316646041321 is a deficient number, since it is larger than the sum of its proper divisors (135864038623).

1316646041321 is a wasteful number, since it uses less digits than its factorization.

1316646041321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2470255291.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 1316646041321 in words is "one trillion, three hundred sixteen billion, six hundred forty-six million, forty-one thousand, three hundred twenty-one".