14784828991 has 4 divisors (see below), whose sum is σ = 15654524832. Its totient is φ = 13915133152.

The previous prime is 14784828983. The next prime is 14784829009. The reversal of 14784828991 is 19982848741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19982848741 = 37 ⋅540076993.

It is a cyclic number.

It is not a de Polignac number, because 14784828991 - 2³ = 14784828983 is a prime.

It is a super-2 number, since 2×14784828991² (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 (14784828911) 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, 434847895 + ... + 434847928.

It is an arithmetic number, because the mean of its divisors is an integer number (3913631208).

Almost surely, 2^14784828991 is an apocalyptic number.

14784828991 is a deficient number, since it is larger than the sum of its proper divisors (869695841).

14784828991 is an equidigital number, since it uses as much as digits as its factorization.

14784828991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869695840.

The product of its digits is 9289728, while the sum is 61.

The spelling of 14784828991 in words is "fourteen billion, seven hundred eighty-four million, eight hundred twenty-eight thousand, nine hundred ninety-one".