14351061661 has 4 divisors (see below), whose sum is σ = 14353248924. Its totient is φ = 14348874400.

The previous prime is 14351061653. The next prime is 14351061679. The reversal of 14351061661 is 16616015341.

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 5740335225 + 8610726436 = 75765^2 + 92794^2 .

It is a cyclic number.

It is not a de Polignac number, because 14351061661 - 2³ = 14351061653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14351061611) 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, 1083760 + ... + 1096921.

It is an arithmetic number, because the mean of its divisors is an integer number (3588312231).

Almost surely, 2^14351061661 is an apocalyptic number.

It is an amenable number.

14351061661 is a deficient number, since it is larger than the sum of its proper divisors (2187263).

14351061661 is an equidigital number, since it uses as much as digits as its factorization.

14351061661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2187262.

The product of its (nonzero) digits is 12960, while the sum is 34.

The spelling of 14351061661 in words is "fourteen billion, three hundred fifty-one million, sixty-one thousand, six hundred sixty-one".