205120070061667 has 2 divisors, whose sum is σ = 205120070061668. Its totient is φ = 205120070061666.

The previous prime is 205120070061619. The next prime is 205120070061701. The reversal of 205120070061667 is 766160070021502.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 205120070061667 - 2¹⁵ = 205120070028899 is a prime.

It is not a weakly prime, because it can be changed into another prime (205120070061607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102560035030833 + 102560035030834.

It is an arithmetic number, because the mean of its divisors is an integer number (102560035030834).

Almost surely, 2^{205120070061667} is an apocalyptic number.

205120070061667 is a deficient number, since it is larger than the sum of its proper divisors (1).

205120070061667 is an equidigital number, since it uses as much as digits as its factorization.

205120070061667 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 43.

The spelling of 205120070061667 in words is "two hundred five trillion, one hundred twenty billion, seventy million, sixty-one thousand, six hundred sixty-seven".