216606627568 has 20 divisors (see below), whose sum is σ = 419710380120. Its totient is φ = 108294271424.

The previous prime is 216606627539. The next prime is 216606627641. The reversal of 216606627568 is 865726606612.

It is a super-2 number, since 2×216606627568² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

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, 365383 + ... + 752806.

It is an arithmetic number, because the mean of its divisors is an integer number (20985519006).

Almost surely, 2^216606627568 is an apocalyptic number.

It is an amenable number.

216606627568 is a deficient number, since it is larger than the sum of its proper divisors (203103752552).

216606627568 is a wasteful number, since it uses less digits than its factorization.

216606627568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130304 (or 1130298 counting only the distinct ones).

The product of its (nonzero) digits is 8709120, while the sum is 55.

The spelling of 216606627568 in words is "two hundred sixteen billion, six hundred six million, six hundred twenty-seven thousand, five hundred sixty-eight".