216530182646 has 8 divisors (see below), whose sum is σ = 325319985480. Its totient is φ = 108090187488.

The previous prime is 216530182591. The next prime is 216530182697. The reversal of 216530182646 is 646281035612.

216530182646 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×216530182646² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 216530182597 and 216530182606.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87450371 + ... + 87452846.

It is an arithmetic number, because the mean of its divisors is an integer number (40664998185).

Almost surely, 2^216530182646 is an apocalyptic number.

216530182646 is a deficient number, since it is larger than the sum of its proper divisors (108789802834).

216530182646 is a wasteful number, since it uses less digits than its factorization.

216530182646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174903838.

The product of its (nonzero) digits is 414720, while the sum is 44.

The spelling of 216530182646 in words is "two hundred sixteen billion, five hundred thirty million, one hundred eighty-two thousand, six hundred forty-six".