216165322714618 has 64 divisors (see below), whose sum is σ = 347435723529216. Its totient is φ = 100679977728000.

The previous prime is 216165322714571. The next prime is 216165322714633. The reversal of 216165322714618 is 816417223561612.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 563001148 + ... + 563384968.

It is an arithmetic number, because the mean of its divisors is an integer number (5428683180144).

Almost surely, 2^{216165322714618} is an apocalyptic number.

216165322714618 is a deficient number, since it is larger than the sum of its proper divisors (131270400814598).

216165322714618 is a wasteful number, since it uses less digits than its factorization.

216165322714618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386519.

The product of its digits is 5806080, while the sum is 55.

The spelling of 216165322714618 in words is "two hundred sixteen trillion, one hundred sixty-five billion, three hundred twenty-two million, seven hundred fourteen thousand, six hundred eighteen".