8123939545792 has 280 divisors, whose sum is σ = 19824210379440. Its totient is φ = 3293822085120.

The previous prime is 8123939545781. The next prime is 8123939545801. The reversal of 8123939545792 is 2975459393218.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2747357178 + ... + 2747360134.

Almost surely, 2^{8123939545792} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8123939545792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9912105189720).

8123939545792 is an abundant number, since it is smaller than the sum of its proper divisors (11700270833648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8123939545792 is an equidigital number, since it uses as much as digits as its factorization.

8123939545792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3957 (or 3926 counting only the distinct ones).

The product of its digits is 146966400, while the sum is 67.

The spelling of 8123939545792 in words is "eight trillion, one hundred twenty-three billion, nine hundred thirty-nine million, five hundred forty-five thousand, seven hundred ninety-two".