12399619320 has 896 divisors, whose sum is σ = 49861785600. Its totient is φ = 2743372800.

The previous prime is 12399619223. The next prime is 12399619333. The reversal of 12399619320 is 2391699321.

12399619320 is a `hidden beast` number, since 1 + 2 + 3 + 9 + 9 + 619 + 3 + 20 = 666.

12399619320 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 223 ways as a sum of consecutive naturals, for example, 288363219 + ... + 288363261.

Almost surely, 2^12399619320 is an apocalyptic number.

12399619320 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 12399619320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24930892800).

12399619320 is an abundant number, since it is smaller than the sum of its proper divisors (37462166280).

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

12399619320 is a wasteful number, since it uses less digits than its factorization.

12399619320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 124 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 12399619320 in words is "twelve billion, three hundred ninety-nine million, six hundred nineteen thousand, three hundred twenty".