1223455566793 has 2 divisors, whose sum is σ = 1223455566794. Its totient is φ = 1223455566792.

The previous prime is 1223455566787. The next prime is 1223455567001. The reversal of 1223455566793 is 3976655543221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 760746795264 + 462708771529 = 872208^2 + 680227^2 .

It is a cyclic number.

It is not a de Polignac number, because 1223455566793 - 2⁵ = 1223455566761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1223455566733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611727783396 + 611727783397.

It is an arithmetic number, because the mean of its divisors is an integer number (611727783397).

Almost surely, 2^{1223455566793} is an apocalyptic number.

It is an amenable number.

1223455566793 is a deficient number, since it is larger than the sum of its proper divisors (1).

1223455566793 is an equidigital number, since it uses as much as digits as its factorization.

1223455566793 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40824000, while the sum is 58.

The spelling of 1223455566793 in words is "one trillion, two hundred twenty-three billion, four hundred fifty-five million, five hundred sixty-six thousand, seven hundred ninety-three".