216530562346 has 64 divisors (see below), whose sum is σ = 379440940032. Its totient is φ = 90759854592.

The previous prime is 216530562341. The next prime is 216530562403. The reversal of 216530562346 is 643265035612.

It is not an unprimeable number, because it can be changed into a prime (216530562341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81493050 + ... + 81495706.

It is an arithmetic number, because the mean of its divisors is an integer number (5928764688).

Almost surely, 2^216530562346 is an apocalyptic number.

216530562346 is a deficient number, since it is larger than the sum of its proper divisors (162910377686).

216530562346 is a wasteful number, since it uses less digits than its factorization.

216530562346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3323.

The product of its (nonzero) digits is 777600, while the sum is 43.

Adding to 216530562346 its reverse (643265035612), we get a palindrome (859795597958).

The spelling of 216530562346 in words is "two hundred sixteen billion, five hundred thirty million, five hundred sixty-two thousand, three hundred forty-six".