215623276273 has 4 divisors (see below), whose sum is σ = 215625446388. Its totient is φ = 215621106160.

The previous prime is 215623276243. The next prime is 215623276279. The reversal of 215623276273 is 372672326512.

It is a happy number.

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 178715871504 + 36907404769 = 422748^2 + 192113^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-215623276273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215623276279) 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 3 ways as a sum of consecutive naturals, for example, 928486 + ... + 1137247.

It is an arithmetic number, because the mean of its divisors is an integer number (53906361597).

Almost surely, 2^215623276273 is an apocalyptic number.

It is an amenable number.

215623276273 is a deficient number, since it is larger than the sum of its proper divisors (2170115).

215623276273 is a wasteful number, since it uses less digits than its factorization.

215623276273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2170114.

The product of its digits is 1270080, while the sum is 46.

The spelling of 215623276273 in words is "two hundred fifteen billion, six hundred twenty-three million, two hundred seventy-six thousand, two hundred seventy-three".