1648680077171 has 2 divisors, whose sum is σ = 1648680077172. Its totient is φ = 1648680077170.

The previous prime is 1648680077167. The next prime is 1648680077237. The reversal of 1648680077171 is 1717700868461.

It is a weak prime.

It is an emirp because it is prime and its reverse (1717700868461) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1648680077171 - 2² = 1648680077167 is a prime.

It is not a weakly prime, because it can be changed into another prime (1648680077971) 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, 824340038585 + 824340038586.

It is an arithmetic number, because the mean of its divisors is an integer number (824340038586).

Almost surely, 2^{1648680077171} is an apocalyptic number.

1648680077171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648680077171 is an equidigital number, since it uses as much as digits as its factorization.

1648680077171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3161088, while the sum is 56.

The spelling of 1648680077171 in words is "one trillion, six hundred forty-eight billion, six hundred eighty million, seventy-seven thousand, one hundred seventy-one".