216500323695 has 16 divisors (see below), whose sum is σ = 346481953920. Its totient is φ = 115439693984.

The previous prime is 216500323693. The next prime is 216500323709. The reversal of 216500323695 is 596323005612.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 216500323695 - 2¹ = 216500323693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216500323691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1630569 + ... + 1758338.

It is an arithmetic number, because the mean of its divisors is an integer number (21655122120).

Almost surely, 2^216500323695 is an apocalyptic number.

216500323695 is a deficient number, since it is larger than the sum of its proper divisors (129981630225).

216500323695 is a wasteful number, since it uses less digits than its factorization.

216500323695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3393174.

The product of its (nonzero) digits is 291600, while the sum is 42.

The spelling of 216500323695 in words is "two hundred sixteen billion, five hundred million, three hundred twenty-three thousand, six hundred ninety-five".