66107565708133 has 2 divisors, whose sum is σ = 66107565708134. Its totient is φ = 66107565708132.

The previous prime is 66107565708089. The next prime is 66107565708137. The reversal of 66107565708133 is 33180756570166.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36158838821284 + 29948726886849 = 6013222^2 + 5472543^2 .

It is a cyclic number.

It is not a de Polignac number, because 66107565708133 - 2¹³ = 66107565699941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66107565708137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33053782854066 + 33053782854067.

It is an arithmetic number, because the mean of its divisors is an integer number (33053782854067).

Almost surely, 2^{66107565708133} is an apocalyptic number.

It is an amenable number.

66107565708133 is a deficient number, since it is larger than the sum of its proper divisors (1).

66107565708133 is an equidigital number, since it uses as much as digits as its factorization.

66107565708133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 66107565708133 in words is "sixty-six trillion, one hundred seven billion, five hundred sixty-five million, seven hundred eight thousand, one hundred thirty-three".