1315356521361 has 16 divisors (see below), whose sum is σ = 1801963252800. Its totient is φ = 852846919488.

The previous prime is 1315356521359. The next prime is 1315356521387. The reversal of 1315356521361 is 1631256535131.

It is not a de Polignac number, because 1315356521361 - 2¹ = 1315356521359 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1315356521861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2214951 + ... + 2745308.

It is an arithmetic number, because the mean of its divisors is an integer number (112622703300).

Almost surely, 2^{1315356521361} is an apocalyptic number.

It is an amenable number.

1315356521361 is a deficient number, since it is larger than the sum of its proper divisors (486606731439).

1315356521361 is a wasteful number, since it uses less digits than its factorization.

1315356521361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4962688.

The product of its digits is 243000, while the sum is 42.

The spelling of 1315356521361 in words is "one trillion, three hundred fifteen billion, three hundred fifty-six million, five hundred twenty-one thousand, three hundred sixty-one".