86418471787 has 16 divisors (see below), whose sum is σ = 89917552800. Its totient is φ = 82954851840.

The previous prime is 86418471773. The next prime is 86418471791. The reversal of 86418471787 is 78717481468.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86418471787 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86418471187) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6167073 + ... + 6181069.

It is an arithmetic number, because the mean of its divisors is an integer number (5619847050).

Almost surely, 2^86418471787 is an apocalyptic number.

86418471787 is a deficient number, since it is larger than the sum of its proper divisors (3499081013).

86418471787 is a wasteful number, since it uses less digits than its factorization.

86418471787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15246.

The product of its digits is 16859136, while the sum is 61.

The spelling of 86418471787 in words is "eighty-six billion, four hundred eighteen million, four hundred seventy-one thousand, seven hundred eighty-seven".