216780816220076 has 48 divisors (see below), whose sum is σ = 404852106903552. Its totient is φ = 101209449196800.

The previous prime is 216780816220043. The next prime is 216780816220091. The reversal of 216780816220076 is 670022618087612.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 574718621 + ... + 575095691.

It is an arithmetic number, because the mean of its divisors is an integer number (8434418893824).

Almost surely, 2^{216780816220076} is an apocalyptic number.

It is an amenable number.

216780816220076 is a deficient number, since it is larger than the sum of its proper divisors (188071290683476).

216780816220076 is a wasteful number, since it uses less digits than its factorization.

216780816220076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443790 (or 443788 counting only the distinct ones).

The product of its (nonzero) digits is 5419008, while the sum is 56.

The spelling of 216780816220076 in words is "two hundred sixteen trillion, seven hundred eighty billion, eight hundred sixteen million, two hundred twenty thousand, seventy-six".