319651010561 has 4 divisors (see below), whose sum is σ = 324891191124. Its totient is φ = 314410830000.

The previous prime is 319651010527. The next prime is 319651010597. The reversal of 319651010561 is 165010156913.

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 10688458225 + 308962552336 = 103385^2 + 555844^2 .

It is a cyclic number.

It is not a de Polignac number, because 319651010561 - 2¹⁴ = 319650994177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (319651040561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2620090190 + ... + 2620090311.

It is an arithmetic number, because the mean of its divisors is an integer number (81222797781).

Almost surely, 2^319651010561 is an apocalyptic number.

It is an amenable number.

319651010561 is a deficient number, since it is larger than the sum of its proper divisors (5240180563).

319651010561 is an equidigital number, since it uses as much as digits as its factorization.

319651010561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5240180562.

The product of its (nonzero) digits is 24300, while the sum is 38.

The spelling of 319651010561 in words is "three hundred nineteen billion, six hundred fifty-one million, ten thousand, five hundred sixty-one".