216704040588786 has 64 divisors (see below), whose sum is σ = 444146289814656. Its totient is φ = 70449982848000.

The previous prime is 216704040588769. The next prime is 216704040588817. The reversal of 216704040588786 is 687885040407612.

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, 5009202396 + ... + 5009245656.

It is an arithmetic number, because the mean of its divisors is an integer number (6939785778354).

Almost surely, 2^{216704040588786} is an apocalyptic number.

216704040588786 is an abundant number, since it is smaller than the sum of its proper divisors (227442249225870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216704040588786 is a wasteful number, since it uses less digits than its factorization.

216704040588786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71707.

The product of its (nonzero) digits is 144506880, while the sum is 66.

The spelling of 216704040588786 in words is "two hundred sixteen trillion, seven hundred four billion, forty million, five hundred eighty-eight thousand, seven hundred eighty-six".