66200017070071 has 2 divisors, whose sum is σ = 66200017070072. Its totient is φ = 66200017070070.

The previous prime is 66200017069981. The next prime is 66200017070081. The reversal of 66200017070071 is 17007071000266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66200017070071 - 2⁹ = 66200017069559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66200017070071.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66200017070081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33100008535035 + 33100008535036.

It is an arithmetic number, because the mean of its divisors is an integer number (33100008535036).

Almost surely, 2^{66200017070071} is an apocalyptic number.

66200017070071 is a deficient number, since it is larger than the sum of its proper divisors (1).

66200017070071 is an equidigital number, since it uses as much as digits as its factorization.

66200017070071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24696, while the sum is 37.

The spelling of 66200017070071 in words is "sixty-six trillion, two hundred billion, seventeen million, seventy thousand, seventy-one".