1318216461663 has 8 divisors (see below), whose sum is σ = 1764624427776. Its totient is φ = 875309735000.

The previous prime is 1318216461659. The next prime is 1318216461671. The reversal of 1318216461663 is 3661646128131.

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

It is a cyclic number.

It is not a de Polignac number, because 1318216461663 - 2² = 1318216461659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1318216411663) 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, 875308983 + ... + 875310488.

It is an arithmetic number, because the mean of its divisors is an integer number (220578053472).

Almost surely, 2^{1318216461663} is an apocalyptic number.

1318216461663 is a deficient number, since it is larger than the sum of its proper divisors (446407966113).

1318216461663 is a wasteful number, since it uses less digits than its factorization.

1318216461663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750619725.

The product of its digits is 746496, while the sum is 48.

The spelling of 1318216461663 in words is "one trillion, three hundred eighteen billion, two hundred sixteen million, four hundred sixty-one thousand, six hundred sixty-three".