216716211560 has 16 divisors (see below), whose sum is σ = 487611476100. Its totient is φ = 86686484608.

The previous prime is 216716211533. The next prime is 216716211617. The reversal of 216716211560 is 65112617612.

It can be written as a sum of positive squares in 2 ways, for example, as 215264449156 + 1451762404 = 463966^2 + 38102^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2708952605 + ... + 2708952684.

Almost surely, 2^216716211560 is an apocalyptic number.

216716211560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216716211560 is an abundant number, since it is smaller than the sum of its proper divisors (270895264540).

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

216716211560 is a wasteful number, since it uses less digits than its factorization.

216716211560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5417905300 (or 5417905296 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 38.

The spelling of 216716211560 in words is "two hundred sixteen billion, seven hundred sixteen million, two hundred eleven thousand, five hundred sixty".