842180631616 has 21 divisors (see below), whose sum is σ = 1671216759541. Its totient is φ = 421086644992.

The previous prime is 842180631553. The next prime is 842180631647. The reversal of 842180631616 is 616136081248.

The square root of 842180631616 is 917704.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 715512974400 + 126667657216 = 845880^2 + 355904^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 7284276 + ... + 7398988.

Almost surely, 2^842180631616 is an apocalyptic number.

842180631616 is the 917704-th square number.

It is an amenable number.

842180631616 is a deficient number, since it is larger than the sum of its proper divisors (829036127925).

842180631616 is an frugal number, since it uses more digits than its factorization.

842180631616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229438 (or 114715 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 46.

It can be divided in two parts, 842180 and 631616, that added together give a square (1473796 = 1214²).

The spelling of 842180631616 in words is "eight hundred forty-two billion, one hundred eighty million, six hundred thirty-one thousand, six hundred sixteen".