842459971918 has 16 divisors (see below), whose sum is σ = 1332000000000. Its totient is φ = 398519973432.

The previous prime is 842459971849. The next prime is 842459971931. The reversal of 842459971918 is 819179954248.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14971918 + ... + 15028081.

It is an arithmetic number, because the mean of its divisors is an integer number (83250000000).

Almost surely, 2^842459971918 is an apocalyptic number.

842459971918 is a deficient number, since it is larger than the sum of its proper divisors (489540028082).

842459971918 is a wasteful number, since it uses less digits than its factorization.

842459971918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30000759.

The product of its digits is 52254720, while the sum is 67.

The spelling of 842459971918 in words is "eight hundred forty-two billion, four hundred fifty-nine million, nine hundred seventy-one thousand, nine hundred eighteen".