84578957806 has 16 divisors (see below), whose sum is σ = 145743760224. Its totient is φ = 36060309504.

The previous prime is 84578957803. The next prime is 84578957807. The reversal of 84578957806 is 60875987548.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84578957803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15648475 + ... + 15653878.

It is an arithmetic number, because the mean of its divisors is an integer number (9108985014).

Almost surely, 2^84578957806 is an apocalyptic number.

84578957806 is a deficient number, since it is larger than the sum of its proper divisors (61164802418).

84578957806 is a wasteful number, since it uses less digits than its factorization.

84578957806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31302555.

The product of its (nonzero) digits is 135475200, while the sum is 67.

The spelling of 84578957806 in words is "eighty-four billion, five hundred seventy-eight million, nine hundred fifty-seven thousand, eight hundred six".