84506855865 has 8 divisors (see below), whose sum is σ = 135210969408. Its totient is φ = 45070323120.

The previous prime is 84506855861. The next prime is 84506855971. The reversal of 84506855865 is 56855860548.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 84506855865 - 2² = 84506855861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84506855799 and 84506855808.

It is not an unprimeable number, because it can be changed into a prime (84506855861) 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, 2816895181 + ... + 2816895210.

It is an arithmetic number, because the mean of its divisors is an integer number (16901371176).

Almost surely, 2^84506855865 is an apocalyptic number.

It is an amenable number.

84506855865 is a deficient number, since it is larger than the sum of its proper divisors (50704113543).

84506855865 is a wasteful number, since it uses less digits than its factorization.

84506855865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5633790399.

The product of its (nonzero) digits is 46080000, while the sum is 60.

The spelling of 84506855865 in words is "eighty-four billion, five hundred six million, eight hundred fifty-five thousand, eight hundred sixty-five".