14911721069 has 4 divisors (see below), whose sum is σ = 17041966944. Its totient is φ = 12781475196.

The previous prime is 14911721059. The next prime is 14911721087. The reversal of 14911721069 is 96012711941.

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 de Polignac number, because none of the positive numbers 2^k-14911721069 is a prime.

It is a super-2 number, since 2×14911721069² (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 (14911721059) 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, 1065122927 + ... + 1065122940.

It is an arithmetic number, because the mean of its divisors is an integer number (4260491736).

Almost surely, 2^14911721069 is an apocalyptic number.

It is an amenable number.

14911721069 is a deficient number, since it is larger than the sum of its proper divisors (2130245875).

14911721069 is an equidigital number, since it uses as much as digits as its factorization.

14911721069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2130245874.

The product of its (nonzero) digits is 27216, while the sum is 41.

The spelling of 14911721069 in words is "fourteen billion, nine hundred eleven million, seven hundred twenty-one thousand, sixty-nine".