1224628479553 has 4 divisors (see below), whose sum is σ = 1225340060868. Its totient is φ = 1223916898240.

The previous prime is 1224628479527. The next prime is 1224628479563. The reversal of 1224628479553 is 3559748264221.

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 1075499665969 + 149128813584 = 1037063^2 + 386172^2 .

It is a cyclic number.

It is not a de Polignac number, because 1224628479553 - 2³⁷ = 1087189526081 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1224628479563) 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, 355788076 + ... + 355791517.

It is an arithmetic number, because the mean of its divisors is an integer number (306335015217).

Almost surely, 2^{1224628479553} is an apocalyptic number.

It is an amenable number.

1224628479553 is a deficient number, since it is larger than the sum of its proper divisors (711581315).

1224628479553 is an equidigital number, since it uses as much as digits as its factorization.

1224628479553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711581314.

The product of its digits is 29030400, while the sum is 58.

The spelling of 1224628479553 in words is "one trillion, two hundred twenty-four billion, six hundred twenty-eight million, four hundred seventy-nine thousand, five hundred fifty-three".