123828734689849 has 8 divisors (see below), whose sum is σ = 144809683092800. Its totient is φ = 103670568577296.

The previous prime is 123828734689843. The next prime is 123828734690047. The reversal of 123828734689849 is 948986437828321.

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

It is not a de Polignac number, because 123828734689849 - 2⁷ = 123828734689721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123828734689843) 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, 205695572274 + ... + 205695572875.

It is an arithmetic number, because the mean of its divisors is an integer number (18101210386600).

Almost surely, 2^{123828734689849} is an apocalyptic number.

It is an amenable number.

123828734689849 is a deficient number, since it is larger than the sum of its proper divisors (20980948402951).

123828734689849 is an equidigital number, since it uses as much as digits as its factorization.

123828734689849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411391145199.

The product of its digits is 8026324992, while the sum is 82.

The spelling of 123828734689849 in words is "one hundred twenty-three trillion, eight hundred twenty-eight billion, seven hundred thirty-four million, six hundred eighty-nine thousand, eight hundred forty-nine".