216065371153 has 4 divisors (see below), whose sum is σ = 216145606068. Its totient is φ = 215985136240.

The previous prime is 216065371091. The next prime is 216065371177. The reversal of 216065371153 is 351173560612.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69967127169 + 146098243984 = 264513^2 + 382228^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-216065371153 is a prime.

It is a super-2 number, since 2×216065371153² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (40) 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 not an unprimeable number, because it can be changed into a prime (216065071153) 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, 40113418 + ... + 40118803.

It is an arithmetic number, because the mean of its divisors is an integer number (54036401517).

Almost surely, 2^216065371153 is an apocalyptic number.

It is an amenable number.

216065371153 is a deficient number, since it is larger than the sum of its proper divisors (80234915).

216065371153 is an equidigital number, since it uses as much as digits as its factorization.

216065371153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80234914.

The product of its (nonzero) digits is 113400, while the sum is 40.

The spelling of 216065371153 in words is "two hundred sixteen billion, sixty-five million, three hundred seventy-one thousand, one hundred fifty-three".