1212453245543 has 8 divisors (see below), whose sum is σ = 1236292635888. Its totient is φ = 1188649518784.

The previous prime is 1212453245513. The next prime is 1212453245557. The reversal of 1212453245543 is 3455423542121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1212453245543 - 2²⁶ = 1212386136679 is a prime.

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 1212453245543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212453245503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8847230 + ... + 8983227.

It is an arithmetic number, because the mean of its divisors is an integer number (154536579486).

Almost surely, 2^{1212453245543} is an apocalyptic number.

1212453245543 is a deficient number, since it is larger than the sum of its proper divisors (23839390345).

1212453245543 is a wasteful number, since it uses less digits than its factorization.

1212453245543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17831793.

The product of its digits is 576000, while the sum is 41.

Adding to 1212453245543 its reverse (3455423542121), we get a palindrome (4667876787664).

The spelling of 1212453245543 in words is "one trillion, two hundred twelve billion, four hundred fifty-three million, two hundred forty-five thousand, five hundred forty-three".