215056630315 has 4 divisors (see below), whose sum is σ = 258067956384. Its totient is φ = 172045304248.

The previous prime is 215056630291. The next prime is 215056630319. The reversal of 215056630315 is 513036650512.

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 215056630315 - 2¹⁷ = 215056499243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (215056630319) 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, 21505663027 + ... + 21505663036.

It is an arithmetic number, because the mean of its divisors is an integer number (64516989096).

Almost surely, 2^215056630315 is an apocalyptic number.

215056630315 is a deficient number, since it is larger than the sum of its proper divisors (43011326069).

215056630315 is an equidigital number, since it uses as much as digits as its factorization.

215056630315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43011326068.

The product of its (nonzero) digits is 81000, while the sum is 37.

The spelling of 215056630315 in words is "two hundred fifteen billion, fifty-six million, six hundred thirty thousand, three hundred fifteen".