216671516602 has 8 divisors (see below), whose sum is σ = 325009249812. Its totient is φ = 108335100000.

The previous prime is 216671516599. The next prime is 216671516681. The reversal of 216671516602 is 206615176612.

It can be written as a sum of positive squares in 2 ways, for example, as 174547648521 + 42123868081 = 417789^2 + 205241^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×216671516602² (a number of 23 digits) contains 22 as substring.

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, 488352 + ... + 819652.

Almost surely, 2^216671516602 is an apocalyptic number.

216671516602 is a deficient number, since it is larger than the sum of its proper divisors (108337733210).

216671516602 is a wasteful number, since it uses less digits than its factorization.

216671516602 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 658304.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 216671516602 in words is "two hundred sixteen billion, six hundred seventy-one million, five hundred sixteen thousand, six hundred two".