1223051615663 has 4 divisors (see below), whose sum is σ = 1223905107408. Its totient is φ = 1222198123920.

The previous prime is 1223051615587. The next prime is 1223051615677. The reversal of 1223051615663 is 3665161503221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1223051615663 - 2¹⁰ = 1223051614639 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 1223051615663.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223051612663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 426743723 + ... + 426746588.

It is an arithmetic number, because the mean of its divisors is an integer number (305976276852).

Almost surely, 2^{1223051615663} is an apocalyptic number.

1223051615663 is a deficient number, since it is larger than the sum of its proper divisors (853491745).

1223051615663 is an equidigital number, since it uses as much as digits as its factorization.

1223051615663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 853491744.

The product of its (nonzero) digits is 194400, while the sum is 41.

The spelling of 1223051615663 in words is "one trillion, two hundred twenty-three billion, fifty-one million, six hundred fifteen thousand, six hundred sixty-three".