84671976865 has 32 divisors (see below), whose sum is σ = 122709093120. Its totient is φ = 54790815744.

The previous prime is 84671976839. The next prime is 84671976913. The reversal of 84671976865 is 56867917648.

It is not a de Polignac number, because 84671976865 - 2¹³ = 84671968673 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84671976865.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 76812 + ... + 418621.

It is an arithmetic number, because the mean of its divisors is an integer number (3834659160).

Almost surely, 2^84671976865 is an apocalyptic number.

It is an amenable number.

84671976865 is a deficient number, since it is larger than the sum of its proper divisors (38037116255).

84671976865 is a wasteful number, since it uses less digits than its factorization.

84671976865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495721.

The product of its digits is 121927680, while the sum is 67.

The spelling of 84671976865 in words is "eighty-four billion, six hundred seventy-one million, nine hundred seventy-six thousand, eight hundred sixty-five".