798178219776 has 648 divisors, whose sum is σ = 2787410559024. Its totient is φ = 227133849600.

The previous prime is 798178219771. The next prime is 798178219799. The reversal of 798178219776 is 677912871897.

It is a tau number, because it is divible by the number of its divisors (648).

It is a super-3 number, since 3×798178219776³ (a number of 37 digits) contains 333 as substring.

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (798178219771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1222324666 + ... + 1222325318.

Almost surely, 2^798178219776 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 798178219776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1393705279512).

798178219776 is an abundant number, since it is smaller than the sum of its proper divisors (1989232339248).

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

798178219776 is an equidigital number, since it uses as much as digits as its factorization.

798178219776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1066 counting only the distinct ones).

The product of its digits is 149361408, while the sum is 72.

The spelling of 798178219776 in words is "seven hundred ninety-eight billion, one hundred seventy-eight million, two hundred nineteen thousand, seven hundred seventy-six".