8484798254778 has 128 divisors (see below), whose sum is σ = 19539561000960. Its totient is φ = 2761393575024.

The previous prime is 8484798254773. The next prime is 8484798254789. The reversal of 8484798254778 is 8774528974848.

8484798254778 is a `hidden beast` number, since 8 + 484 + 7 + 9 + 8 + 25 + 47 + 78 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a junction number, because it is equal to n+sod(n) for n = 8484798254697 and 8484798254706.

It is not an unprimeable number, because it can be changed into a prime (8484798254773) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 568564425 + ... + 568579347.

It is an arithmetic number, because the mean of its divisors is an integer number (152652820320).

Almost surely, 2^{8484798254778} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8484798254778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9769780500480).

8484798254778 is an abundant number, since it is smaller than the sum of its proper divisors (11054762746182).

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

8484798254778 is a wasteful number, since it uses less digits than its factorization.

8484798254778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18012 (or 17994 counting only the distinct ones).

The product of its digits is 8092385280, while the sum is 81.

The spelling of 8484798254778 in words is "eight trillion, four hundred eighty-four billion, seven hundred ninety-eight million, two hundred fifty-four thousand, seven hundred seventy-eight".