1331165616463 has 4 divisors (see below), whose sum is σ = 1349400761968. Its totient is φ = 1312930470960.

The previous prime is 1331165616461. The next prime is 1331165616497. The reversal of 1331165616463 is 3646165611331.

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 1331165616463 - 2¹ = 1331165616461 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1331165616461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9117572643 + ... + 9117572788.

It is an arithmetic number, because the mean of its divisors is an integer number (337350190492).

Almost surely, 2^{1331165616463} is an apocalyptic number.

1331165616463 is a deficient number, since it is larger than the sum of its proper divisors (18235145505).

1331165616463 is an equidigital number, since it uses as much as digits as its factorization.

1331165616463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18235145504.

The product of its digits is 699840, while the sum is 46.

The spelling of 1331165616463 in words is "one trillion, three hundred thirty-one billion, one hundred sixty-five million, six hundred sixteen thousand, four hundred sixty-three".