14668828661 has 4 divisors (see below), whose sum is σ = 14909301324. Its totient is φ = 14428356000.

The previous prime is 14668828631. The next prime is 14668828679. The reversal of 14668828661 is 16682886641.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16682886641 = 17 ⋅981346273.

It can be written as a sum of positive squares in 2 ways, for example, as 2443324900 + 12225503761 = 49430^2 + 110569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14668828661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14668828597 and 14668828606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14668828631) 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, 120236240 + ... + 120236361.

It is an arithmetic number, because the mean of its divisors is an integer number (3727325331).

Almost surely, 2^14668828661 is an apocalyptic number.

It is an amenable number.

14668828661 is a deficient number, since it is larger than the sum of its proper divisors (240472663).

14668828661 is an equidigital number, since it uses as much as digits as its factorization.

14668828661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240472662.

The product of its digits is 5308416, while the sum is 56.

The spelling of 14668828661 in words is "fourteen billion, six hundred sixty-eight million, eight hundred twenty-eight thousand, six hundred sixty-one".