1721463363671 has 2 divisors, whose sum is σ = 1721463363672. Its totient is φ = 1721463363670.

The previous prime is 1721463363637. The next prime is 1721463363701. The reversal of 1721463363671 is 1763633641271.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1721463363671 is a prime.

It is a super-2 number, since 2×1721463363671² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1721463363601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 860731681835 + 860731681836.

It is an arithmetic number, because the mean of its divisors is an integer number (860731681836).

Almost surely, 2^{1721463363671} is an apocalyptic number.

1721463363671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1721463363671 is an equidigital number, since it uses as much as digits as its factorization.

1721463363671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 50.

The spelling of 1721463363671 in words is "one trillion, seven hundred twenty-one billion, four hundred sixty-three million, three hundred sixty-three thousand, six hundred seventy-one".