66010101616651 has 2 divisors, whose sum is σ = 66010101616652. Its totient is φ = 66010101616650.

The previous prime is 66010101616639. The next prime is 66010101616699. The reversal of 66010101616651 is 15661610101066.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66010101616651 - 2¹³ = 66010101608459 is a prime.

It is not a weakly prime, because it can be changed into another prime (66010171616651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33005050808325 + 33005050808326.

It is an arithmetic number, because the mean of its divisors is an integer number (33005050808326).

Almost surely, 2^{66010101616651} is an apocalyptic number.

66010101616651 is a deficient number, since it is larger than the sum of its proper divisors (1).

66010101616651 is an equidigital number, since it uses as much as digits as its factorization.

66010101616651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The spelling of 66010101616651 in words is "sixty-six trillion, ten billion, one hundred one million, six hundred sixteen thousand, six hundred fifty-one".