14121660997 has 4 divisors (see below), whose sum is σ = 14952346956. Its totient is φ = 13290975040.

The previous prime is 14121660967. The next prime is 14121661027. The reversal of 14121660997 is 79906612141.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79906612141 = 157 ⋅508959313.

It is an interprime number because it is at equal distance from previous prime (14121660967) and next prime (14121661027).

It can be written as a sum of positive squares in 2 ways, for example, as 4426107841 + 9695553156 = 66529^2 + 98466^2 .

It is a cyclic number.

It is not a de Polignac number, because 14121660997 - 2⁷ = 14121660869 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 (14121660967) 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, 415342954 + ... + 415342987.

It is an arithmetic number, because the mean of its divisors is an integer number (3738086739).

Almost surely, 2^14121660997 is an apocalyptic number.

14121660997 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

14121660997 is a deficient number, since it is larger than the sum of its proper divisors (830685959).

14121660997 is an equidigital number, since it uses as much as digits as its factorization.

14121660997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830685958.

The product of its (nonzero) digits is 163296, while the sum is 46.

The spelling of 14121660997 in words is "fourteen billion, one hundred twenty-one million, six hundred sixty thousand, nine hundred ninety-seven".