1068316561513 has 4 divisors (see below), whose sum is σ = 1074284810640. Its totient is φ = 1062348312388.

The previous prime is 1068316561463. The next prime is 1068316561537. The reversal of 1068316561513 is 3151656138601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1068316561513 - 2³⁷ = 930877608041 is a prime.

It is a super-3 number, since 3×1068316561513³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1068316561913) 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, 2984124295 + ... + 2984124652.

It is an arithmetic number, because the mean of its divisors is an integer number (268571202660).

Almost surely, 2^{1068316561513} is an apocalyptic number.

It is an amenable number.

1068316561513 is a deficient number, since it is larger than the sum of its proper divisors (5968249127).

1068316561513 is an equidigital number, since it uses as much as digits as its factorization.

1068316561513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5968249126.

The product of its (nonzero) digits is 388800, while the sum is 46.

The spelling of 1068316561513 in words is "one trillion, sixty-eight billion, three hundred sixteen million, five hundred sixty-one thousand, five hundred thirteen".