66736707406739 has 2 divisors, whose sum is σ = 66736707406740. Its totient is φ = 66736707406738.

The previous prime is 66736707406723. The next prime is 66736707406771. The reversal of 66736707406739 is 93760470763766.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66736707406739 - 2⁴ = 66736707406723 is a prime.

It is a super-3 number, since 3×66736707406739³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (66736707406709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33368353703369 + 33368353703370.

It is an arithmetic number, because the mean of its divisors is an integer number (33368353703370).

Almost surely, 2^{66736707406739} is an apocalyptic number.

66736707406739 is a deficient number, since it is larger than the sum of its proper divisors (1).

66736707406739 is an equidigital number, since it uses as much as digits as its factorization.

66736707406739 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008189504, while the sum is 71.

The spelling of 66736707406739 in words is "sixty-six trillion, seven hundred thirty-six billion, seven hundred seven million, four hundred six thousand, seven hundred thirty-nine".