216491015163 has 8 divisors (see below), whose sum is σ = 292308544000. Its totient is φ = 142500414888.

The previous prime is 216491015161. The next prime is 216491015171. The reversal of 216491015163 is 361510194612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 216491015163 - 2¹ = 216491015161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216491015161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 456731863 + ... + 456732336.

It is an arithmetic number, because the mean of its divisors is an integer number (36538568000).

Almost surely, 2^216491015163 is an apocalyptic number.

216491015163 is a deficient number, since it is larger than the sum of its proper divisors (75817528837).

216491015163 is an equidigital number, since it uses as much as digits as its factorization.

216491015163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913464281.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 216491015163 in words is "two hundred sixteen billion, four hundred ninety-one million, fifteen thousand, one hundred sixty-three".