86642767423 has 4 divisors (see below), whose sum is σ = 86812989480. Its totient is φ = 86472545368.

The previous prime is 86642767403. The next prime is 86642767427. The reversal of 86642767423 is 32476724668.

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 86642767423 - 2⁵ = 86642767391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86642767427) 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, 85110265 + ... + 85111282.

It is an arithmetic number, because the mean of its divisors is an integer number (21703247370).

Almost surely, 2^86642767423 is an apocalyptic number.

86642767423 is a deficient number, since it is larger than the sum of its proper divisors (170222057).

86642767423 is a wasteful number, since it uses less digits than its factorization.

86642767423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170222056.

The product of its digits is 16257024, while the sum is 55.

The spelling of 86642767423 in words is "eighty-six billion, six hundred forty-two million, seven hundred sixty-seven thousand, four hundred twenty-three".