315064143445561 has 4 divisors (see below), whose sum is σ = 315132089135652. Its totient is φ = 314996197755472.

The previous prime is 315064143445531. The next prime is 315064143445567. The reversal of 315064143445561 is 165544341460513.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64083931499536 + 250980211946025 = 8005244^2 + 15842355^2 .

It is a cyclic number.

It is not a de Polignac number, because 315064143445561 - 2⁴⁷ = 174326655090233 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315064143445499 and 315064143445508.

It is not an unprimeable number, because it can be changed into a prime (315064143445567) 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, 33972838090 + ... + 33972847363.

It is an arithmetic number, because the mean of its divisors is an integer number (78783022283913).

Almost surely, 2^{315064143445561} is an apocalyptic number.

It is an amenable number.

315064143445561 is a deficient number, since it is larger than the sum of its proper divisors (67945690091).

315064143445561 is an equidigital number, since it uses as much as digits as its factorization.

315064143445561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67945690090.

The product of its (nonzero) digits is 10368000, while the sum is 52.

The spelling of 315064143445561 in words is "three hundred fifteen trillion, sixty-four billion, one hundred forty-three million, four hundred forty-five thousand, five hundred sixty-one".