8978619807520 has 384 divisors, whose sum is σ = 24393004941312. Its totient is φ = 3091227955200.

The previous prime is 8978619807481. The next prime is 8978619807551. The reversal of 8978619807520 is 257089168798.

8978619807520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×8978619807520² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8978619807520.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2524209582 + ... + 2524213138.

It is an arithmetic number, because the mean of its divisors is an integer number (63523450368).

Almost surely, 2^{8978619807520} is an apocalyptic number.

8978619807520 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 8978619807520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12196502470656).

8978619807520 is an abundant number, since it is smaller than the sum of its proper divisors (15414385133792).

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

8978619807520 is a wasteful number, since it uses less digits than its factorization.

8978619807520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4224 (or 4216 counting only the distinct ones).

The product of its (nonzero) digits is 121927680, while the sum is 70.

The spelling of 8978619807520 in words is "eight trillion, nine hundred seventy-eight billion, six hundred nineteen million, eight hundred seven thousand, five hundred twenty".