216000501605 has 16 divisors (see below), whose sum is σ = 296321725440. Its totient is φ = 148068396672.

The previous prime is 216000501601. The next prime is 216000501623. The reversal of 216000501605 is 506105000612.

It is not a de Polignac number, because 216000501605 - 2² = 216000501601 is a prime.

It is a super-2 number, since 2×216000501605² (a number of 23 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216000501601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 849269 + ... + 1073898.

It is an arithmetic number, because the mean of its divisors is an integer number (18520107840).

Almost surely, 2^216000501605 is an apocalyptic number.

It is an amenable number.

216000501605 is a deficient number, since it is larger than the sum of its proper divisors (80321223835).

216000501605 is a wasteful number, since it uses less digits than its factorization.

216000501605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1926388.

The product of its (nonzero) digits is 1800, while the sum is 26.

The spelling of 216000501605 in words is "two hundred sixteen billion, five hundred one thousand, six hundred five".