1233456677789 has 12 divisors (see below), whose sum is σ = 1435516532604. Its totient is φ = 1056748137984.

The previous prime is 1233456677749. The next prime is 1233456677797. The reversal of 1233456677789 is 9877766543321.

It can be written as a sum of positive squares in 2 ways, for example, as 92315707225 + 1141140970564 = 303835^2 + 1068242^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1233456677789 is a prime.

It is a Curzon number.

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 (1233456677729) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5853062 + ... + 6060135.

It is an arithmetic number, because the mean of its divisors is an integer number (119626377717).

Almost surely, 2^{1233456677789} is an apocalyptic number.

It is an amenable number.

1233456677789 is a deficient number, since it is larger than the sum of its proper divisors (202059854815).

1233456677789 is a wasteful number, since it uses less digits than its factorization.

1233456677789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11915324 (or 11915317 counting only the distinct ones).

The product of its digits is 320060160, while the sum is 68.

The spelling of 1233456677789 in words is "one trillion, two hundred thirty-three billion, four hundred fifty-six million, six hundred seventy-seven thousand, seven hundred eighty-nine".