7789236978432 has 1296 divisors, whose sum is σ = 28352543362080. Its totient is φ = 1879943675904.

The previous prime is 7789236978431. The next prime is 7789236978491. The reversal of 7789236978432 is 2348796329877.

Its product of digits (1536288768) is a multiple of the sum of its prime divisors (1568).

It is not an unprimeable number, because it can be changed into a prime (7789236978431) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5231185944 + ... + 5231187432.

Almost surely, 2^{7789236978432} 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 7789236978432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14176271681040).

7789236978432 is an abundant number, since it is smaller than the sum of its proper divisors (20563306383648).

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

7789236978432 is a wasteful number, since it uses less digits than its factorization.

7789236978432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1606 (or 1568 counting only the distinct ones).

The product of its digits is 1536288768, while the sum is 75.

The spelling of 7789236978432 in words is "seven trillion, seven hundred eighty-nine billion, two hundred thirty-six million, nine hundred seventy-eight thousand, four hundred thirty-two".