216061519 has 4 divisors (see below), whose sum is σ = 216370440. Its totient is φ = 215752600.

The previous prime is 216061507. The next prime is 216061529. The reversal of 216061519 is 915160612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 216061519 - 2⁵ = 216061487 is a prime.

It is a super-2 number, since 2×216061519² = 93365159985174722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216061529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153409 + ... + 154810.

It is an arithmetic number, because the mean of its divisors is an integer number (54092610).

Almost surely, 2^216061519 is an apocalyptic number.

216061519 is a deficient number, since it is larger than the sum of its proper divisors (308921).

216061519 is an equidigital number, since it uses as much as digits as its factorization.

216061519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308920.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 216061519 is about 14699.0312265809. The cubic root of 216061519 is about 600.0569566301.

The spelling of 216061519 in words is "two hundred sixteen million, sixty-one thousand, five hundred nineteen".