216717015776 has 24 divisors (see below), whose sum is σ = 441374096520. Its totient is φ = 104622007168.

The previous prime is 216717015773. The next prime is 216717015821. The reversal of 216717015776 is 677510717612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216717015773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116764706 + ... + 116766561.

It is an arithmetic number, because the mean of its divisors is an integer number (18390587355).

Almost surely, 2^216717015776 is an apocalyptic number.

It is an amenable number.

216717015776 is an abundant number, since it is smaller than the sum of its proper divisors (224657080744).

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

216717015776 is a wasteful number, since it uses less digits than its factorization.

216717015776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233531306 (or 233531298 counting only the distinct ones).

The product of its (nonzero) digits is 864360, while the sum is 50.

The spelling of 216717015776 in words is "two hundred sixteen billion, seven hundred seventeen million, fifteen thousand, seven hundred seventy-six".