6661414313 has 4 divisors (see below), whose sum is σ = 6690004308. Its totient is φ = 6632824320.

The previous prime is 6661414301. The next prime is 6661414349. The reversal of 6661414313 is 3134141666.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3134141666 = 2 ⋅1567070833.

It can be written as a sum of positive squares in 2 ways, for example, as 4669398889 + 1992015424 = 68333^2 + 44632^2 .

It is a cyclic number.

It is not a de Polignac number, because 6661414313 - 2¹⁶ = 6661348777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6661414393) 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, 14294648 + ... + 14295113.

It is an arithmetic number, because the mean of its divisors is an integer number (1672501077).

Almost surely, 2^6661414313 is an apocalyptic number.

It is an amenable number.

6661414313 is a deficient number, since it is larger than the sum of its proper divisors (28589995).

6661414313 is a wasteful number, since it uses less digits than its factorization.

6661414313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28589994.

The product of its digits is 31104, while the sum is 35.

The square root of 6661414313 is about 81617.4877890762. The cubic root of 6661414313 is about 1881.5776624987.

Adding to 6661414313 its reverse (3134141666), we get a palindrome (9795555979).

The spelling of 6661414313 in words is "six billion, six hundred sixty-one million, four hundred fourteen thousand, three hundred thirteen".