211815055584163 has 2 divisors, whose sum is σ = 211815055584164. Its totient is φ = 211815055584162.

The previous prime is 211815055584131. The next prime is 211815055584211. The reversal of 211815055584163 is 361485550518112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211815055584163 - 2⁵ = 211815055584131 is a prime.

It is a super-2 number, since 2×211815055584163² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (211815055584103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105907527792081 + 105907527792082.

It is an arithmetic number, because the mean of its divisors is an integer number (105907527792082).

Almost surely, 2^{211815055584163} is an apocalyptic number.

211815055584163 is a deficient number, since it is larger than the sum of its proper divisors (1).

211815055584163 is an equidigital number, since it uses as much as digits as its factorization.

211815055584163 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760000, while the sum is 55.

The spelling of 211815055584163 in words is "two hundred eleven trillion, eight hundred fifteen billion, fifty-five million, five hundred eighty-four thousand, one hundred sixty-three".