216544250612 has 12 divisors (see below), whose sum is σ = 380936484096. Its totient is φ = 107705255160.

The previous prime is 216544250579. The next prime is 216544250621. The reversal of 216544250612 is 216052445612.

It is a super-2 number, since 2×216544250612² (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, 141716678 + ... + 141718205.

It is an arithmetic number, because the mean of its divisors is an integer number (31744707008).

Almost surely, 2^216544250612 is an apocalyptic number.

It is an amenable number.

216544250612 is a deficient number, since it is larger than the sum of its proper divisors (164392233484).

216544250612 is a wasteful number, since it uses less digits than its factorization.

216544250612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283435078 (or 283435076 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 216544250612 in words is "two hundred sixteen billion, five hundred forty-four million, two hundred fifty thousand, six hundred twelve".