86704781279 has 24 divisors (see below), whose sum is σ = 94715187840. Its totient is φ = 79142953824.

The previous prime is 86704781263. The next prime is 86704781291. The reversal of 86704781279 is 97218740768.

It is not a de Polignac number, because 86704781279 - 2⁴ = 86704781263 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 (86704781239) 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 23 ways as a sum of consecutive naturals, for example, 2662952 + ... + 2695314.

It is an arithmetic number, because the mean of its divisors is an integer number (3946466160).

Almost surely, 2^86704781279 is an apocalyptic number.

86704781279 is a deficient number, since it is larger than the sum of its proper divisors (8010406561).

86704781279 is a wasteful number, since it uses less digits than its factorization.

86704781279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32559 (or 32522 counting only the distinct ones).

The product of its (nonzero) digits is 9483264, while the sum is 59.

The spelling of 86704781279 in words is "eighty-six billion, seven hundred four million, seven hundred eighty-one thousand, two hundred seventy-nine".