66100510093 has 2 divisors, whose sum is σ = 66100510094. Its totient is φ = 66100510092.

The previous prime is 66100510061. The next prime is 66100510097. The reversal of 66100510093 is 39001500166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64606455684 + 1494054409 = 254178^2 + 38653^2 .

It is a cyclic number.

It is not a de Polignac number, because 66100510093 - 2⁵ = 66100510061 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66100510097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33050255046 + 33050255047.

It is an arithmetic number, because the mean of its divisors is an integer number (33050255047).

Almost surely, 2^66100510093 is an apocalyptic number.

It is an amenable number.

66100510093 is a deficient number, since it is larger than the sum of its proper divisors (1).

66100510093 is an equidigital number, since it uses as much as digits as its factorization.

66100510093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4860, while the sum is 31.

The spelling of 66100510093 in words is "sixty-six billion, one hundred million, five hundred ten thousand, ninety-three".