14051199991 has 4 divisors (see below), whose sum is σ = 14052016000. Its totient is φ = 14050383984.

The previous prime is 14051199983. The next prime is 14051200013. The reversal of 14051199991 is 19999115041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 14051199991 - 2³ = 14051199983 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 (14051199931) 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, 381606 + ... + 416803.

It is an arithmetic number, because the mean of its divisors is an integer number (3513004000).

Almost surely, 2^14051199991 is an apocalyptic number.

14051199991 is a deficient number, since it is larger than the sum of its proper divisors (816009).

14051199991 is an equidigital number, since it uses as much as digits as its factorization.

14051199991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 816008.

The product of its (nonzero) digits is 131220, while the sum is 49.

The spelling of 14051199991 in words is "fourteen billion, fifty-one million, one hundred ninety-nine thousand, nine hundred ninety-one".