66200017061863 has 2 divisors, whose sum is σ = 66200017061864. Its totient is φ = 66200017061862.

The previous prime is 66200017061821. The next prime is 66200017061873. The reversal of 66200017061863 is 36816071000266.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66200017061863 - 2⁹ = 66200017061351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66200017061813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33100008530931 + 33100008530932.

It is an arithmetic number, because the mean of its divisors is an integer number (33100008530932).

Almost surely, 2^{66200017061863} is an apocalyptic number.

66200017061863 is a deficient number, since it is larger than the sum of its proper divisors (1).

66200017061863 is an equidigital number, since it uses as much as digits as its factorization.

66200017061863 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 66200017061863 in words is "sixty-six trillion, two hundred billion, seventeen million, sixty-one thousand, eight hundred sixty-three".