84363785817 has 16 divisors (see below), whose sum is σ = 113925888000. Its totient is φ = 55522316304.

The previous prime is 84363785783. The next prime is 84363785837. The reversal of 84363785817 is 71858736348.

It is a happy number.

It is not a de Polignac number, because 84363785817 - 2¹² = 84363781721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84363785837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1844734 + ... + 1889912.

It is an arithmetic number, because the mean of its divisors is an integer number (7120368000).

Almost surely, 2^84363785817 is an apocalyptic number.

It is an amenable number.

84363785817 is a deficient number, since it is larger than the sum of its proper divisors (29562102183).

84363785817 is a wasteful number, since it uses less digits than its factorization.

84363785817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53140.

The product of its digits is 27095040, while the sum is 60.

The spelling of 84363785817 in words is "eighty-four billion, three hundred sixty-three million, seven hundred eighty-five thousand, eight hundred seventeen".