1223455677789 has 48 divisors (see below), whose sum is σ = 1687478595264. Its totient is φ = 788410022400.

The previous prime is 1223455677781. The next prime is 1223455677803. The reversal of 1223455677789 is 9877765543221.

It is not a de Polignac number, because 1223455677789 - 2³ = 1223455677781 is a prime.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223455677781) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 288480709 + ... + 288484949.

It is an arithmetic number, because the mean of its divisors is an integer number (35155804068).

Almost surely, 2^{1223455677789} is an apocalyptic number.

It is an amenable number.

1223455677789 is a deficient number, since it is larger than the sum of its proper divisors (464022917475).

1223455677789 is a wasteful number, since it uses less digits than its factorization.

1223455677789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858 (or 4815 counting only the distinct ones).

The product of its digits is 177811200, while the sum is 66.

The spelling of 1223455677789 in words is "one trillion, two hundred twenty-three billion, four hundred fifty-five million, six hundred seventy-seven thousand, seven hundred eighty-nine".