8468440640864 has 48 divisors (see below), whose sum is σ = 17629814353536. Its totient is φ = 3997690291200.

The previous prime is 8468440640827. The next prime is 8468440640867. The reversal of 8468440640864 is 4680460448648.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a junction number, because it is equal to n+sod(n) for n = 8468440640797 and 8468440640806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8468440640867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104065847 + ... + 104147190.

It is an arithmetic number, because the mean of its divisors is an integer number (367287799032).

Almost surely, 2^{8468440640864} is an apocalyptic number.

It is an amenable number.

8468440640864 is an abundant number, since it is smaller than the sum of its proper divisors (9161373712672).

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

8468440640864 is a wasteful number, since it uses less digits than its factorization.

8468440640864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208213119 (or 208213111 counting only the distinct ones).

The product of its (nonzero) digits is 113246208, while the sum is 62.

The spelling of 8468440640864 in words is "eight trillion, four hundred sixty-eight billion, four hundred forty million, six hundred forty thousand, eight hundred sixty-four".