8978979747584 has 432 divisors, whose sum is σ = 24149738995200. Its totient is φ = 3230680104960.

The previous prime is 8978979747571. The next prime is 8978979747589. The reversal of 8978979747584 is 4857479798798.

It is a Harshad number since it is a multiple of its sum of digits (92).

It is a junction number, because it is equal to n+sod(n) for n = 8978979747493 and 8978979747502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8978979747589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 381277442 + ... + 381300990.

It is an arithmetic number, because the mean of its divisors is an integer number (55902173600).

Almost surely, 2^{8978979747584} 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 8978979747584, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12074869497600).

8978979747584 is an abundant number, since it is smaller than the sum of its proper divisors (15170759247616).

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

8978979747584 is a wasteful number, since it uses less digits than its factorization.

8978979747584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23664 (or 23621 counting only the distinct ones).

The product of its digits is 71693475840, while the sum is 92.

The spelling of 8978979747584 in words is "eight trillion, nine hundred seventy-eight billion, nine hundred seventy-nine million, seven hundred forty-seven thousand, five hundred eighty-four".