6665651150101 has 2 divisors, whose sum is σ = 6665651150102. Its totient is φ = 6665651150100.

The previous prime is 6665651150099. The next prime is 6665651150107. The reversal of 6665651150101 is 1010511565666.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5463667827601 + 1201983322500 = 2337449^2 + 1096350^2 .

It is a cyclic number.

It is not a de Polignac number, because 6665651150101 - 2¹ = 6665651150099 is a prime.

Together with 6665651150099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6665651150107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3332825575050 + 3332825575051.

It is an arithmetic number, because the mean of its divisors is an integer number (3332825575051).

Almost surely, 2^{6665651150101} is an apocalyptic number.

It is an amenable number.

6665651150101 is a deficient number, since it is larger than the sum of its proper divisors (1).

6665651150101 is an equidigital number, since it uses as much as digits as its factorization.

6665651150101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162000, while the sum is 43.

The spelling of 6665651150101 in words is "six trillion, six hundred sixty-five billion, six hundred fifty-one million, one hundred fifty thousand, one hundred one".