14214871991 has 2 divisors, whose sum is σ = 14214871992. Its totient is φ = 14214871990.

The previous prime is 14214871949. The next prime is 14214872011. The reversal of 14214871991 is 19917841241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14214871991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (14214871291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7107435995 + 7107435996.

It is an arithmetic number, because the mean of its divisors is an integer number (7107435996).

Almost surely, 2^14214871991 is an apocalyptic number.

14214871991 is a deficient number, since it is larger than the sum of its proper divisors (1).

14214871991 is an equidigital number, since it uses as much as digits as its factorization.

14214871991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 47.

The spelling of 14214871991 in words is "fourteen billion, two hundred fourteen million, eight hundred seventy-one thousand, nine hundred ninety-one".