84659693391 has 24 divisors (see below), whose sum is σ = 150506123040. Its totient is φ = 44655662016.

The previous prime is 84659693389. The next prime is 84659693401. The reversal of 84659693391 is 19339695648.

84659693391 is a `hidden beast` number, since 8 + 4 + 6 + 596 + 9 + 3 + 39 + 1 = 666.

It is not a de Polignac number, because 84659693391 - 2¹ = 84659693389 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84659693191) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 51683976 + ... + 51685613.

It is an arithmetic number, because the mean of its divisors is an integer number (6271088460).

Almost surely, 2^84659693391 is an apocalyptic number.

84659693391 is a deficient number, since it is larger than the sum of its proper divisors (65846429649).

84659693391 is a wasteful number, since it uses less digits than its factorization.

84659693391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103369615 (or 103369612 counting only the distinct ones).

The product of its digits is 37791360, while the sum is 63.

The spelling of 84659693391 in words is "eighty-four billion, six hundred fifty-nine million, six hundred ninety-three thousand, three hundred ninety-one".