2661320315 has 4 divisors (see below), whose sum is σ = 3193584384. Its totient is φ = 2129056248.

The previous prime is 2661320297. The next prime is 2661320351. The reversal of 2661320315 is 5130231662.

2661320315 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2661320315 - 2⁶ = 2661320251 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, 266132027 + ... + 266132036.

It is an arithmetic number, because the mean of its divisors is an integer number (798396096).

Almost surely, 2^2661320315 is an apocalyptic number.

2661320315 is a deficient number, since it is larger than the sum of its proper divisors (532264069).

2661320315 is an equidigital number, since it uses as much as digits as its factorization.

2661320315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532264068.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2661320315 is about 51587.9861498780. The cubic root of 2661320315 is about 1385.7951903757.

Adding to 2661320315 its reverse (5130231662), we get a palindrome (7791551977).

The spelling of 2661320315 in words is "two billion, six hundred sixty-one million, three hundred twenty thousand, three hundred fifteen".