215180215399 has 2 divisors, whose sum is σ = 215180215400. Its totient is φ = 215180215398.

The previous prime is 215180215373. The next prime is 215180215403. The reversal of 215180215399 is 993512081512.

215180215399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 215180215399 - 2¹⁵ = 215180182631 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (215180255399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107590107699 + 107590107700.

It is an arithmetic number, because the mean of its divisors is an integer number (107590107700).

Almost surely, 2^215180215399 is an apocalyptic number.

215180215399 is a deficient number, since it is larger than the sum of its proper divisors (1).

215180215399 is an equidigital number, since it uses as much as digits as its factorization.

215180215399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 46.

The spelling of 215180215399 in words is "two hundred fifteen billion, one hundred eighty million, two hundred fifteen thousand, three hundred ninety-nine".