84678329287 has 16 divisors (see below), whose sum is σ = 90844300800. Its totient is φ = 78693310080.

The previous prime is 84678329273. The next prime is 84678329297. The reversal of 84678329287 is 78292387648.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 84678329287 - 2¹⁹ = 84677804999 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 (84678329227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165087 + ... + 443407.

It is an arithmetic number, because the mean of its divisors is an integer number (5677768800).

Almost surely, 2^84678329287 is an apocalyptic number.

84678329287 is a deficient number, since it is larger than the sum of its proper divisors (6165971513).

84678329287 is a wasteful number, since it uses less digits than its factorization.

84678329287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278646.

The product of its digits is 65028096, while the sum is 64.

The spelling of 84678329287 in words is "eighty-four billion, six hundred seventy-eight million, three hundred twenty-nine thousand, two hundred eighty-seven".