7943798079648 has 216 divisors, whose sum is σ = 23693790704220. Its totient is φ = 2521588285440.

The previous prime is 7943798079631. The next prime is 7943798079661. The reversal of 7943798079648 is 8469708973497.

7943798079648 is a `hidden beast` number, since 7 + 9 + 437 + 98 + 0 + 7 + 96 + 4 + 8 = 666.

It can be written as a sum of positive squares in 6 ways, for example, as 4638630447504 + 3305167632144 = 2153748^2 + 1818012^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 44418568 + ... + 44597048.

Almost surely, 2^{7943798079648} 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 7943798079648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11846895352110).

7943798079648 is an abundant number, since it is smaller than the sum of its proper divisors (15749992624572).

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

7943798079648 is a wasteful number, since it uses less digits than its factorization.

7943798079648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178672 (or 178588 counting only the distinct ones).

The product of its (nonzero) digits is 4608866304, while the sum is 81.

The spelling of 7943798079648 in words is "seven trillion, nine hundred forty-three billion, seven hundred ninety-eight million, seventy-nine thousand, six hundred forty-eight".