14471716981 has 4 divisors (see below), whose sum is σ = 14472100000. Its totient is φ = 14471333964.

The previous prime is 14471716943. The next prime is 14471717017. The reversal of 14471716981 is 18961717441.

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-14471716981 is a prime.

It is a super-2 number, since 2×14471716981² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14471776981) 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, 127761 + ... + 212758.

It is an arithmetic number, because the mean of its divisors is an integer number (3618025000).

Almost surely, 2^14471716981 is an apocalyptic number.

It is an amenable number.

14471716981 is a deficient number, since it is larger than the sum of its proper divisors (383019).

14471716981 is an equidigital number, since it uses as much as digits as its factorization.

14471716981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383018.

The product of its digits is 338688, while the sum is 49.

The spelling of 14471716981 in words is "fourteen billion, four hundred seventy-one million, seven hundred sixteen thousand, nine hundred eighty-one".