86788655688767 has 4 divisors (see below), whose sum is σ = 86789796505056. Its totient is φ = 86787514872480.

The previous prime is 86788655688739. The next prime is 86788655688851. The reversal of 86788655688767 is 76788655688768.

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 86788655688767 - 2¹⁰ = 86788655687743 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 86788655688767.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86788655688367) 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, 570294023 + ... + 570446184.

It is an arithmetic number, because the mean of its divisors is an integer number (21697449126264).

Almost surely, 2^{86788655688767} is an apocalyptic number.

86788655688767 is a deficient number, since it is larger than the sum of its proper divisors (1140816289).

86788655688767 is a wasteful number, since it uses less digits than its factorization.

86788655688767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140816288.

The product of its digits is 364157337600, while the sum is 95.

Subtracting from 86788655688767 its reverse (76788655688768), we obtain a palindrome (9999999999999).

The spelling of 86788655688767 in words is "eighty-six trillion, seven hundred eighty-eight billion, six hundred fifty-five million, six hundred eighty-eight thousand, seven hundred sixty-seven".