14143516781 has 4 divisors (see below), whose sum is σ = 14157236064. Its totient is φ = 14129797500.

The previous prime is 14143516769. The next prime is 14143516789. The reversal of 14143516781 is 18761534141.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14143516781 is a prime.

It is a super-2 number, since 2×14143516781² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14143516789) 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, 6858095 + ... + 6860156.

It is an arithmetic number, because the mean of its divisors is an integer number (3539309016).

Almost surely, 2^14143516781 is an apocalyptic number.

It is an amenable number.

14143516781 is a deficient number, since it is larger than the sum of its proper divisors (13719283).

14143516781 is a wasteful number, since it uses less digits than its factorization.

14143516781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13719282.

The product of its digits is 80640, while the sum is 41.

The spelling of 14143516781 in words is "fourteen billion, one hundred forty-three million, five hundred sixteen thousand, seven hundred eighty-one".