1316210646321 has 6 divisors (see below), whose sum is σ = 1901193155810. Its totient is φ = 877473764208.

The previous prime is 1316210646293. The next prime is 1316210646341. The reversal of 1316210646321 is 1236460126131.

1316210646321 is a `hidden beast` number, since 1 + 3 + 1 + 6 + 2 + 1 + 0 + 646 + 3 + 2 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1222050655296 + 94159991025 = 1105464^2 + 306855^2 .

It is not a de Polignac number, because 1316210646321 - 2⁹ = 1316210645809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1316210646341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 73122813676 + ... + 73122813693.

Almost surely, 2^{1316210646321} is an apocalyptic number.

It is an amenable number.

1316210646321 is a deficient number, since it is larger than the sum of its proper divisors (584982509489).

1316210646321 is a wasteful number, since it uses less digits than its factorization.

1316210646321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146245627375 (or 146245627372 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The spelling of 1316210646321 in words is "one trillion, three hundred sixteen billion, two hundred ten million, six hundred forty-six thousand, three hundred twenty-one".