1213767442453 has 4 divisors (see below), whose sum is σ = 1213786015948. Its totient is φ = 1213748868960.

The previous prime is 1213767442451. The next prime is 1213767442457. The reversal of 1213767442453 is 3542447673121.

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 520947602289 + 692819840164 = 721767^2 + 832358^2 .

It is a cyclic number.

It is not a de Polignac number, because 1213767442453 - 2¹ = 1213767442451 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1213767442397 and 1213767442406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213767442451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9188376 + ... + 9319537.

It is an arithmetic number, because the mean of its divisors is an integer number (303446503987).

Almost surely, 2^{1213767442453} is an apocalyptic number.

It is an amenable number.

1213767442453 is a deficient number, since it is larger than the sum of its proper divisors (18573495).

1213767442453 is an equidigital number, since it uses as much as digits as its factorization.

1213767442453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18573494.

The product of its digits is 3386880, while the sum is 49.

The spelling of 1213767442453 in words is "one trillion, two hundred thirteen billion, seven hundred sixty-seven million, four hundred forty-two thousand, four hundred fifty-three".