7798534217568 has 144 divisors (see below), whose sum is σ = 22736218050000. Its totient is φ = 2534073384960.

The previous prime is 7798534217557. The next prime is 7798534217569. The reversal of 7798534217568 is 8657124358977.

7798534217568 is a `hidden beast` number, since 7 + 7 + 9 + 8 + 5 + 3 + 42 + 17 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 7798534217496 and 7798534217505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7798534217569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14483803 + ... + 15012581.

It is an arithmetic number, because the mean of its divisors is an integer number (157890403125).

Almost surely, 2^{7798534217568} 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 7798534217568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11368109025000).

7798534217568 is an abundant number, since it is smaller than the sum of its proper divisors (14937683832432).

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

7798534217568 is a wasteful number, since it uses less digits than its factorization.

7798534217568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530085 (or 530074 counting only the distinct ones).

The product of its digits is 711244800, while the sum is 72.

The spelling of 7798534217568 in words is "seven trillion, seven hundred ninety-eight billion, five hundred thirty-four million, two hundred seventeen thousand, five hundred sixty-eight".