123234557789 has 8 divisors (see below), whose sum is σ = 140849150208. Its totient is φ = 105622379280.

The previous prime is 123234557779. The next prime is 123234557801. The reversal of 123234557789 is 987755432321.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 123234557789 - 2⁸ = 123234557533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123234557729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492722 + ... + 699459.

It is an arithmetic number, because the mean of its divisors is an integer number (17606143776).

Almost surely, 2^123234557789 is an apocalyptic number.

It is an amenable number.

123234557789 is a deficient number, since it is larger than the sum of its proper divisors (17614592419).

123234557789 is a wasteful number, since it uses less digits than its factorization.

123234557789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206955.

The product of its digits is 12700800, while the sum is 56.

The spelling of 123234557789 in words is "one hundred twenty-three billion, two hundred thirty-four million, five hundred fifty-seven thousand, seven hundred eighty-nine".