12823546903 has 4 divisors (see below), whose sum is σ = 13121768968. Its totient is φ = 12525324840.

The previous prime is 12823546849. The next prime is 12823546919. The reversal of 12823546903 is 30964532821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 30964532821 = 5639 ⋅5491139.

It is a cyclic number.

It is not a de Polignac number, because 12823546903 - 2¹³ = 12823538711 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43), and also a Moran number because the ratio is a prime number: 298222021 = 12823546903 / (1 + 2 + 8 + 2 + 3 + 5 + 4 + 6 + 9 + 0 + 3).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12823546903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12823546303) 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, 149110968 + ... + 149111053.

It is an arithmetic number, because the mean of its divisors is an integer number (3280442242).

Almost surely, 2^12823546903 is an apocalyptic number.

12823546903 is a deficient number, since it is larger than the sum of its proper divisors (298222065).

12823546903 is an equidigital number, since it uses as much as digits as its factorization.

12823546903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298222064.

The product of its (nonzero) digits is 311040, while the sum is 43.

The spelling of 12823546903 in words is "twelve billion, eight hundred twenty-three million, five hundred forty-six thousand, nine hundred three".