7845647836356 has 576 divisors, whose sum is σ = 23692568739840. Its totient is φ = 2165304960000.

The previous prime is 7845647836309. The next prime is 7845647836357. The reversal of 7845647836356 is 6536387465487.

7845647836356 is a `hidden beast` number, since 7 + 8 + 4 + 564 + 7 + 8 + 3 + 6 + 3 + 56 = 666.

It is not an unprimeable number, because it can be changed into a prime (7845647836357) 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 191 ways as a sum of consecutive naturals, for example, 3075517281 + ... + 3075519831.

It is an arithmetic number, because the mean of its divisors is an integer number (41132931840).

Almost surely, 2^{7845647836356} 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 7845647836356, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11846284369920).

7845647836356 is an abundant number, since it is smaller than the sum of its proper divisors (15846920903484).

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

7845647836356 is a wasteful number, since it uses less digits than its factorization.

7845647836356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848 (or 2843 counting only the distinct ones).

The product of its digits is 2438553600, while the sum is 72.

The spelling of 7845647836356 in words is "seven trillion, eight hundred forty-five billion, six hundred forty-seven million, eight hundred thirty-six thousand, three hundred fifty-six".