66736707074117 has 2 divisors, whose sum is σ = 66736707074118. Its totient is φ = 66736707074116.

The previous prime is 66736707074047. The next prime is 66736707074221. The reversal of 66736707074117 is 71147070763766.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53504675166721 + 13232031907396 = 7314689^2 + 3637586^2 .

It is a cyclic number.

It is not a de Polignac number, because 66736707074117 - 2¹⁶ = 66736707008581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66736707074117.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66736703074117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33368353537058 + 33368353537059.

It is an arithmetic number, because the mean of its divisors is an integer number (33368353537059).

Almost surely, 2^{66736707074117} is an apocalyptic number.

It is an amenable number.

66736707074117 is a deficient number, since it is larger than the sum of its proper divisors (1).

66736707074117 is an equidigital number, since it uses as much as digits as its factorization.

66736707074117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43563744, while the sum is 62.

The spelling of 66736707074117 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred seven million, seventy-four thousand, one hundred seventeen".