84578957836 has 12 divisors (see below), whose sum is σ = 148116909528. Its totient is φ = 42259840832.

The previous prime is 84578957809. The next prime is 84578957917. The reversal of 84578957836 is 63875987548.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7403101 + ... + 7414516.

It is an arithmetic number, because the mean of its divisors is an integer number (12343075794).

Almost surely, 2^84578957836 is an apocalyptic number.

It is an amenable number.

84578957836 is a deficient number, since it is larger than the sum of its proper divisors (63537951692).

84578957836 is a wasteful number, since it uses less digits than its factorization.

84578957836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14819048 (or 14819046 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 70.

The spelling of 84578957836 in words is "eighty-four billion, five hundred seventy-eight million, nine hundred fifty-seven thousand, eight hundred thirty-six".