84005868128680 has 32 divisors (see below), whose sum is σ = 189020198183040. Its totient is φ = 33601103714880.

The previous prime is 84005868128641. The next prime is 84005868128719. The reversal of 84005868128680 is 8682186850048.

It is an interprime number because it is at equal distance from previous prime (84005868128641) and next prime (84005868128719).

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37765764 + ... + 39928243.

It is an arithmetic number, because the mean of its divisors is an integer number (5906881193220).

Almost surely, 2^{84005868128680} is an apocalyptic number.

It is an amenable number.

84005868128680 is an abundant number, since it is smaller than the sum of its proper divisors (105014330054360).

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

84005868128680 is a wasteful number, since it uses less digits than its factorization.

84005868128680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77721049 (or 77721045 counting only the distinct ones).

The product of its (nonzero) digits is 47185920, while the sum is 64.

The spelling of 84005868128680 in words is "eighty-four trillion, five billion, eight hundred sixty-eight million, one hundred twenty-eight thousand, six hundred eighty".