215366162215097 has 2 divisors, whose sum is σ = 215366162215098. Its totient is φ = 215366162215096.

The previous prime is 215366162215067. The next prime is 215366162215147. The reversal of 215366162215097 is 790512261663512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 170046190110976 + 45319972104121 = 13040176^2 + 6732011^2 .

It is a cyclic number.

It is not a de Polignac number, because 215366162215097 - 2²⁴ = 215366145437881 is a prime.

It is not a weakly prime, because it can be changed into another prime (215366162215067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107683081107548 + 107683081107549.

It is an arithmetic number, because the mean of its divisors is an integer number (107683081107549).

Almost surely, 2^{215366162215097} is an apocalyptic number.

It is an amenable number.

215366162215097 is a deficient number, since it is larger than the sum of its proper divisors (1).

215366162215097 is an equidigital number, since it uses as much as digits as its factorization.

215366162215097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 215366162215097 in words is "two hundred fifteen trillion, three hundred sixty-six billion, one hundred sixty-two million, two hundred fifteen thousand, ninety-seven".