86966174779 has 4 divisors (see below), whose sum is σ = 94872190680. Its totient is φ = 79060158880.

The previous prime is 86966174761. The next prime is 86966174807. The reversal of 86966174779 is 97747166968.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86966174779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86966172779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3953007934 + ... + 3953007955.

It is an arithmetic number, because the mean of its divisors is an integer number (23718047670).

Almost surely, 2^86966174779 is an apocalyptic number.

86966174779 is a deficient number, since it is larger than the sum of its proper divisors (7906015901).

86966174779 is a wasteful number, since it uses less digits than its factorization.

86966174779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7906015900.

The product of its digits is 192036096, while the sum is 70.

The spelling of 86966174779 in words is "eighty-six billion, nine hundred sixty-six million, one hundred seventy-four thousand, seven hundred seventy-nine".