216013515 has 16 divisors (see below), whose sum is σ = 346000896. Its totient is φ = 115080800.

The previous prime is 216013477. The next prime is 216013519. The reversal of 216013515 is 515310612.

It is not a de Polignac number, because 216013515 - 2⁷ = 216013387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216013519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7150 + ... + 21980.

It is an arithmetic number, because the mean of its divisors is an integer number (21625056).

Almost surely, 2^216013515 is an apocalyptic number.

216013515 is a deficient number, since it is larger than the sum of its proper divisors (129987381).

216013515 is a wasteful number, since it uses less digits than its factorization.

216013515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15810.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 216013515 is about 14697.3982391442. The cubic root of 216013515 is about 600.0125136279.

The spelling of 216013515 in words is "two hundred sixteen million, thirteen thousand, five hundred fifteen".