12392479018920 has 1024 divisors, whose sum is σ = 52020154368000. Its totient is φ = 2326353039360.

The previous prime is 12392479018889. The next prime is 12392479018937. The reversal of 12392479018920 is 2981097429321.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 255 ways as a sum of consecutive naturals, for example, 276613962 + ... + 276658758.

It is an arithmetic number, because the mean of its divisors is an integer number (50800932000).

Almost surely, 2^{12392479018920} is an apocalyptic number.

12392479018920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12392479018920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26010077184000).

12392479018920 is an abundant number, since it is smaller than the sum of its proper divisors (39627675349080).

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

12392479018920 is a wasteful number, since it uses less digits than its factorization.

12392479018920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44903 (or 44885 counting only the distinct ones).

The product of its (nonzero) digits is 3919104, while the sum is 57.

The spelling of 12392479018920 in words is "twelve trillion, three hundred ninety-two billion, four hundred seventy-nine million, eighteen thousand, nine hundred twenty".