1316216436523 has 4 divisors (see below), whose sum is σ = 1326580345600. Its totient is φ = 1305852527448.

The previous prime is 1316216436503. The next prime is 1316216436533. The reversal of 1316216436523 is 3256346126131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1316216436523 - 2¹⁷ = 1316216305451 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1316216436523.

It is not an unprimeable number, because it can be changed into a prime (1316216436503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5181954348 + ... + 5181954601.

It is an arithmetic number, because the mean of its divisors is an integer number (331645086400).

Almost surely, 2^{1316216436523} is an apocalyptic number.

1316216436523 is a deficient number, since it is larger than the sum of its proper divisors (10363909077).

1316216436523 is a wasteful number, since it uses less digits than its factorization.

1316216436523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10363909076.

The product of its digits is 466560, while the sum is 43.

The spelling of 1316216436523 in words is "one trillion, three hundred sixteen billion, two hundred sixteen million, four hundred thirty-six thousand, five hundred twenty-three".