65655551612611 has 2 divisors, whose sum is σ = 65655551612612. Its totient is φ = 65655551612610.

The previous prime is 65655551612533. The next prime is 65655551612647. The reversal of 65655551612611 is 11621615555656.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 65655551612611 - 2²¹ = 65655549515459 is a prime.

It is a super-3 number, since 3×65655551612611³ (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 (65655551612011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32827775806305 + 32827775806306.

It is an arithmetic number, because the mean of its divisors is an integer number (32827775806306).

Almost surely, 2^{65655551612611} is an apocalyptic number.

65655551612611 is a deficient number, since it is larger than the sum of its proper divisors (1).

65655551612611 is an equidigital number, since it uses as much as digits as its factorization.

65655551612611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8100000, while the sum is 55.

The spelling of 65655551612611 in words is "sixty-five trillion, six hundred fifty-five billion, five hundred fifty-one million, six hundred twelve thousand, six hundred eleven".