7847171007864 has 32 divisors (see below), whose sum is σ = 20470880891520. Its totient is φ = 2501996553056.

The previous prime is 7847171007857. The next prime is 7847171007889. The reversal of 7847171007864 is 4687001717487.

It is a super-2 number, since 2×7847171007864² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 7847171007798 and 7847171007807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7107944202 + ... + 7107945305.

It is an arithmetic number, because the mean of its divisors is an integer number (639715027860).

Almost surely, 2^{7847171007864} is an apocalyptic number.

It is an amenable number.

7847171007864 is an abundant number, since it is smaller than the sum of its proper divisors (12623709883656).

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

7847171007864 is a wasteful number, since it uses less digits than its factorization.

7847171007864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14215889539 (or 14215889535 counting only the distinct ones).

The product of its (nonzero) digits is 14751744, while the sum is 60.

The spelling of 7847171007864 in words is "seven trillion, eight hundred forty-seven billion, one hundred seventy-one million, seven thousand, eight hundred sixty-four".