14812923721 has 4 divisors (see below), whose sum is σ = 14814957700. Its totient is φ = 14810889744.

The previous prime is 14812923689. The next prime is 14812923733. The reversal of 14812923721 is 12732921841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12732921841 = 157 ⋅81101413.

It can be written as a sum of positive squares in 2 ways, for example, as 8707689225 + 6105234496 = 93315^2 + 78136^2 .

It is a cyclic number.

It is not a de Polignac number, because 14812923721 - 2⁵ = 14812923689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14812923761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1006026 + ... + 1020643.

It is an arithmetic number, because the mean of its divisors is an integer number (3703739425).

Almost surely, 2^14812923721 is an apocalyptic number.

It is an amenable number.

14812923721 is a deficient number, since it is larger than the sum of its proper divisors (2033979).

14812923721 is an equidigital number, since it uses as much as digits as its factorization.

14812923721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033978.

The product of its digits is 48384, while the sum is 40.

The spelling of 14812923721 in words is "fourteen billion, eight hundred twelve million, nine hundred twenty-three thousand, seven hundred twenty-one".