316661528065 has 4 divisors (see below), whose sum is σ = 379993833684. Its totient is φ = 253329222448.

The previous prime is 316661528059. The next prime is 316661528101. The reversal of 316661528065 is 560825166613.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 560825166613 = 601849 ⋅931837.

It can be written as a sum of positive squares in 2 ways, for example, as 60354240241 + 256307287824 = 245671^2 + 506268^2 .

It is a cyclic number.

It is not a de Polignac number, because 316661528065 - 2¹¹ = 316661526017 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31666152802 + ... + 31666152811.

It is an arithmetic number, because the mean of its divisors is an integer number (94998458421).

Almost surely, 2^316661528065 is an apocalyptic number.

It is an amenable number.

316661528065 is a deficient number, since it is larger than the sum of its proper divisors (63332305619).

316661528065 is an equidigital number, since it uses as much as digits as its factorization.

316661528065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63332305618.

The product of its (nonzero) digits is 1555200, while the sum is 49.

The spelling of 316661528065 in words is "three hundred sixteen billion, six hundred sixty-one million, five hundred twenty-eight thousand, sixty-five".