15454452243 has 4 divisors (see below), whose sum is σ = 20605936328. Its totient is φ = 10302968160.

The previous prime is 15454452203. The next prime is 15454452257. The reversal of 15454452243 is 34225445451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34225445451 = 3 ⋅11408481817.

It is not a de Polignac number, because 15454452243 - 2¹³ = 15454444051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15454452203) 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, 2575742038 + ... + 2575742043.

It is an arithmetic number, because the mean of its divisors is an integer number (5151484082).

Almost surely, 2^15454452243 is an apocalyptic number.

15454452243 is a deficient number, since it is larger than the sum of its proper divisors (5151484085).

15454452243 is an equidigital number, since it uses as much as digits as its factorization.

15454452243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5151484084.

The product of its digits is 384000, while the sum is 39.

Adding to 15454452243 its reverse (34225445451), we get a palindrome (49679897694).

The spelling of 15454452243 in words is "fifteen billion, four hundred fifty-four million, four hundred fifty-two thousand, two hundred forty-three".