86635781673 has 12 divisors (see below), whose sum is σ = 134373865680. Its totient is φ = 49506160872.

The previous prime is 86635781653. The next prime is 86635781689. The reversal of 86635781673 is 37618753668.

It is not a de Polignac number, because 86635781673 - 2¹⁶ = 86635716137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86635781653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 294679383 + ... + 294679676.

It is an arithmetic number, because the mean of its divisors is an integer number (11197822140).

Almost surely, 2^86635781673 is an apocalyptic number.

It is an amenable number.

86635781673 is a deficient number, since it is larger than the sum of its proper divisors (47738084007).

86635781673 is a wasteful number, since it uses less digits than its factorization.

86635781673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589359076 (or 589359069 counting only the distinct ones).

The product of its digits is 30481920, while the sum is 60.

The spelling of 86635781673 in words is "eighty-six billion, six hundred thirty-five million, seven hundred eighty-one thousand, six hundred seventy-three".