86646118407 has 4 divisors (see below), whose sum is σ = 115528157880. Its totient is φ = 57764078936.

The previous prime is 86646118393. The next prime is 86646118457. The reversal of 86646118407 is 70481164668.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86646118407 - 2¹² = 86646114311 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86646118407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86646118457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14441019732 + ... + 14441019737.

It is an arithmetic number, because the mean of its divisors is an integer number (28882039470).

Almost surely, 2^86646118407 is an apocalyptic number.

86646118407 is a deficient number, since it is larger than the sum of its proper divisors (28882039473).

86646118407 is a wasteful number, since it uses less digits than its factorization.

86646118407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28882039472.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 86646118407 in words is "eighty-six billion, six hundred forty-six million, one hundred eighteen thousand, four hundred seven".