215670618485339 has 2 divisors, whose sum is σ = 215670618485340. Its totient is φ = 215670618485338.

The previous prime is 215670618485317. The next prime is 215670618485353. The reversal of 215670618485339 is 933584816076512.

215670618485339 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 215670618485339 - 2¹⁶ = 215670618419803 is a prime.

It is not a weakly prime, because it can be changed into another prime (215670618485389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107835309242669 + 107835309242670.

It is an arithmetic number, because the mean of its divisors is an integer number (107835309242670).

It is a 1-persistent number, because it is pandigital, but 2⋅215670618485339 = 431341236970678 is not.

Almost surely, 2^{215670618485339} is an apocalyptic number.

215670618485339 is a deficient number, since it is larger than the sum of its proper divisors (1).

215670618485339 is an equidigital number, since it uses as much as digits as its factorization.

215670618485339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 261273600, while the sum is 68.

The spelling of 215670618485339 in words is "two hundred fifteen trillion, six hundred seventy billion, six hundred eighteen million, four hundred eighty-five thousand, three hundred thirty-nine".