8078398109520 has 160 divisors (see below), whose sum is σ = 25609708445184. Its totient is φ = 2105793331200.

The previous prime is 8078398109519. The next prime is 8078398109531. The reversal of 8078398109520 is 259018938708.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2275360 + ... + 4618880.

Almost surely, 2^{8078398109520} is an apocalyptic number.

8078398109520 is a gapful number since it is divisible by the number (80) 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 8078398109520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12804854222592).

8078398109520 is an abundant number, since it is smaller than the sum of its proper divisors (17531310335664).

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

8078398109520 is a wasteful number, since it uses less digits than its factorization.

8078398109520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2343861 (or 2343855 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 60.

The spelling of 8078398109520 in words is "eight trillion, seventy-eight billion, three hundred ninety-eight million, one hundred nine thousand, five hundred twenty".