14550115421 has 4 divisors (see below), whose sum is σ = 14599774812. Its totient is φ = 14500456032.

The previous prime is 14550115403. The next prime is 14550115429. The reversal of 14550115421 is 12451105541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 7070287225 + 7479828196 = 84085^2 + 86486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14550115421 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 (14550115429) 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, 24829256 + ... + 24829841.

It is an arithmetic number, because the mean of its divisors is an integer number (3649943703).

Almost surely, 2^14550115421 is an apocalyptic number.

It is an amenable number.

14550115421 is a deficient number, since it is larger than the sum of its proper divisors (49659391).

14550115421 is an equidigital number, since it uses as much as digits as its factorization.

14550115421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49659390.

The product of its (nonzero) digits is 4000, while the sum is 29.

The spelling of 14550115421 in words is "fourteen billion, five hundred fifty million, one hundred fifteen thousand, four hundred twenty-one".