12215475453 has 4 divisors (see below), whose sum is σ = 16287300608. Its totient is φ = 8143650300.

The previous prime is 12215475407. The next prime is 12215475473. The reversal of 12215475453 is 35457451221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35457451221 = 3 ⋅11819150407.

It is not a de Polignac number, because 12215475453 - 2²⁹ = 11678604541 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 (12215475403) 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, 2035912573 + ... + 2035912578.

It is an arithmetic number, because the mean of its divisors is an integer number (4071825152).

Almost surely, 2^12215475453 is an apocalyptic number.

It is an amenable number.

12215475453 is a deficient number, since it is larger than the sum of its proper divisors (4071825155).

12215475453 is an equidigital number, since it uses as much as digits as its factorization.

12215475453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4071825154.

The product of its digits is 168000, while the sum is 39.

The spelling of 12215475453 in words is "twelve billion, two hundred fifteen million, four hundred seventy-five thousand, four hundred fifty-three".