1316263345655 has 16 divisors (see below), whose sum is σ = 1609449437280. Its totient is φ = 1033204543488.

The previous prime is 1316263345651. The next prime is 1316263345673. The reversal of 1316263345655 is 5565433626131.

It is a cyclic number.

It is not a de Polignac number, because 1316263345655 - 2² = 1316263345651 is a prime.

It is a super-2 number, since 2×1316263345655² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1316263345651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9272045 + ... + 9412934.

It is an arithmetic number, because the mean of its divisors is an integer number (100590589830).

Almost surely, 2^{1316263345655} is an apocalyptic number.

1316263345655 is a deficient number, since it is larger than the sum of its proper divisors (293186091625).

1316263345655 is a wasteful number, since it uses less digits than its factorization.

1316263345655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18685250.

The product of its digits is 5832000, while the sum is 50.

The spelling of 1316263345655 in words is "one trillion, three hundred sixteen billion, two hundred sixty-three million, three hundred forty-five thousand, six hundred fifty-five".